cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-10 of 11 results. Next

A208462 Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

5, 198, 20746, 4150760, 1366230232, 675203938944, 470798015742024, 442649055938121520, 542162635236824518416, 841853575796382626351008, 1621152906552533388717492544, 3801835656372944848040523715264
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Column 3 of A208466

Examples

			Some solutions for n=4
..0..0..0....0..0..0....0..0..1....0..1..0....0..0..0....0..0..0....0..0..0
..0..1..0....0..1..0....0..0..0....1..0..0....0..1..0....0..1..2....0..1..0
..0..0..0....0..2..1....0..1..0....0..1..1....0..2..0....1..1..0....0..0..2
..0..1..2....0..0..0....0..0..0....1..2..0....0..0..0....0..0..0....0..0..0

Links

A208463 Number of nX4 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

15, 4041, 4132120, 10318694804, 51074630353994, 441285917587055633, 6105599904286957450405, 127076755601333057601660992, 3793882208792084308313815728802, 156506565477239116898837571013067198
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Column 4 of A208466

Examples

			Some solutions for n=4
..0..0..0..0....0..0..0..1....0..0..1..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..1..0..0....0..0..0..0....1..0..1..1....1..0..1..1
..0..0..1..0....0..0..1..0....0..1..0..2....0..1..2..0....0..2..0..0
..1..0..0..0....0..1..0..1....1..0..0..0....0..0..0..0....0..0..1..0

Links

A208464 Number of nX5 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

52, 113458, 1358524513, 50996571454200, 4585512913250157737, 838683310903953794594668, 279322601688949336349340289673, 156351438264428644652281607036854772
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Column 5 of A208466

Examples

			Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..0..1..0..0....0..0..0..0..0
..0..1..0..1..0....0..1..0..1..0....0..0..0..1..0....1..2..0..1..2
..0..0..0..0..0....0..0..0..0..1....0..1..0..2..2....1..0..0..2..0
..0..1..0..1..0....0..1..0..0..0....3..4..0..0..0....0..1..3..0..0

Links

A208465 Number of nX6 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

203, 4132120, 671329819215, 440379403449903222, 838156242834826375910795, 3787532222733253394267947322830, 35487456577214016192433880229514302813, 625053889686420860521751650397504301747811997
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Column 6 of A208466

Examples

			Some solutions for n=4
..0..0..0..0..0..0....0..0..0..0..1..1....0..0..0..0..0..0....0..0..0..0..1..0
..0..1..0..1..0..2....0..1..0..0..0..0....0..1..0..1..0..0....0..1..0..0..0..0
..0..0..0..0..0..0....2..0..1..0..1..0....1..0..0..0..1..0....0..0..1..0..1..0
..2..0..1..0..1..0....1..0..0..2..0..0....0..1..0..0..2..0....0..0..0..0..0..0

Links

A208467 Number of 2Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

2, 15, 198, 4041, 113458, 4132120, 187612143, 10318694804, 672619407731, 51074630353994, 4455159144290726, 441285917587055633, 49152543937083199076, 6105599904286957450405, 839738743273230043872218
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Row 2 of A208466

Examples

			Some solutions for n=4
..0..0..1..0....0..1..1..0....0..0..1..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..0..0..1....0..0..2..0....1..1..2..0....0..1..0..2

Links

A208461 Number of n X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

1, 15, 20746, 10318694804, 4585512913250157737, 3787532222733253394267947322830, 10658767342117292737413813034097966371526603430
Offset: 1

Views

Author

R. H. Hardin, Feb 27 2012

Keywords

Examples

			Some solutions for n=4:
..0..0..0..0....0..0..0..0....0..0..1..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..1..0..0....0..0..0..0....0..1..0..0....0..1..2..0
..0..2..0..1....0..1..1..0....0..1..0..2....2..0..1..0....0..0..0..0
..0..0..0..0....0..0..0..1....1..0..0..0....0..0..0..0....1..0..1..2

Crossrefs

Diagonal of A208466.

A208468 Number of 3Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

5, 203, 20746, 4132120, 1358524513, 671329819215, 468215145028629, 440379520700561467, 539586833002472556426, 838156377510207185078132, 1614568986664304552415637091, 3787532565162728522045725351515
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Row 3 of A208466

Examples

			Some solutions for n=4
..0..0..0..0....0..1..2..0....0..0..0..0....0..0..0..0....0..1..0..1
..0..1..0..0....0..1..0..0....0..1..1..0....0..1..2..0....0..0..0..0
..1..0..1..0....0..0..1..0....0..1..0..2....1..0..0..0....1..1..1..0

A208469 Number of 4Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

15, 4140, 4150760, 10318694804, 50996571454200, 440379403449903222, 6092197983646590702604
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Row 4 of A208466

Examples

			Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..2..0....0..1..0..2....1..2..0..0....1..0..1..1....0..1..0..0
..0..0..0..0....1..0..0..0....0..0..1..0....0..1..2..0....0..0..1..0
..1..0..1..2....0..1..0..2....0..0..0..0....0..0..0..0....0..0..0..0

A208470 Number of 5Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

52, 115975, 1366230232, 51074630353994, 4585512913250157737, 838156242834826375910795
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Row 5 of A208466

Examples

			Some solutions for n=4
..0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..0....0..1..0..0....0..1..0..0....0..1..1..0....0..1..0..0
..0..0..0..0....0..1..0..0....2..0..1..0....0..0..0..0....0..0..1..0
..0..2..0..0....0..1..0..0....0..0..0..0....0..1..0..0....0..0..1..0
..0..0..1..0....0..0..1..0....0..1..0..0....0..1..0..0....0..0..0..0

A208471 Number of 6Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Original entry on oeis.org

203, 4213597, 675203938944, 441285917587055633, 838683310903953794594668, 3787532222733253394267947322830
Offset: 1

Views

Author

R. H. Hardin Feb 27 2012

Keywords

Comments

Row 6 of A208466

Examples

			Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..1..0..0....0..1..0..0....0..1..2..0....0..1..0..0....0..1..0..0
..0..0..1..2....0..0..1..0....0..0..2..0....0..0..1..0....0..0..1..0
..0..0..0..0....0..0..0..0....0..0..0..2....1..0..0..0....0..0..0..0
..0..1..2..0....0..1..0..0....2..0..0..3....0..1..0..0....0..1..0..0
..1..0..0..0....0..0..1..0....0..1..0..0....0..0..2..0....0..1..0..0
Showing 1-10 of 11 results. Next

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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