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 1-9 of 9 results.

A205674 Prime(A202560(n)), the n-th number s(k) such that 3 divides s(k)-s(j) for some j

Original entry on oeis.org

2, 2, 5, 7, 2, 5, 11, 7, 13, 2, 5, 11, 17, 2, 5, 11, 17, 23, 7, 13, 19, 7, 13, 19, 31, 2, 5, 11, 17, 23, 29, 7, 13, 19, 31, 37, 2, 5, 11, 17, 23, 29, 41, 2, 5, 11, 17, 23, 29, 41, 47, 2, 5, 11, 17, 23, 29, 41, 47, 53, 7, 13, 19, 31, 37, 43, 7, 13, 19, 31, 37, 43, 61, 2, 5
Offset: 1

Views

Author

Clark Kimberling, Jan 30 2012

Keywords

Comments

For a guide to related sequences, see A205558.

Examples

			(See the example at A205560.)

Crossrefs

Cf. A205558, A205560, A205675.

Programs

  • Mathematica
    (See the program at A205560.)

A205673 Prime(A202560(n)), the n-th number s(k) such that 3 divides s(k)-s(j) for some j

Original entry on oeis.org

5, 11, 11, 13, 17, 17, 17, 19, 19, 23, 23, 23, 23, 29, 29, 29, 29, 29, 31, 31, 31, 37, 37, 37, 37, 41, 41, 41, 41, 41, 41, 43, 43, 43, 43, 43, 47, 47, 47, 47, 47, 47, 47, 53, 53, 53, 53, 53, 53, 53, 53, 59, 59, 59, 59, 59, 59, 59, 59, 59, 61, 61, 61, 61, 61, 61
Offset: 1

Views

Author

Clark Kimberling, Jan 30 2012

Keywords

Comments

For a guide to related sequences, see A205558.

Examples

			(See the example at A205560.)

Crossrefs

Cf. A205558, A205560.

Programs

  • Mathematica
    (See the program at A205560.)

A202554 Number of nX2 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

3, 8, 17, 37, 73, 151, 293, 598, 1159, 2358, 4581, 9314, 18143, 36880, 72001, 146325, 286185, 581427, 1138813, 2312865, 4535493, 9207989, 18074789, 36682275, 72066977, 146206411, 287454709, 582979035, 1146938817, 2325328271, 4577459549
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 2 of A202560

Examples

			Some solutions for n=10
..0..1....1..0....0..0....0..0....0..0....0..1....0..1....0..0....0..0....0..0
..0..1....0..1....0..0....0..1....0..0....1..0....0..1....0..0....0..1....0..1
..0..1....1..0....0..0....0..1....0..0....1..0....1..0....0..1....1..0....1..0
..0..1....0..1....0..1....1..0....0..1....0..1....0..1....0..1....0..1....0..1
..0..1....1..0....0..1....1..0....0..1....1..0....0..1....0..1....1..0....0..1
..0..1....0..1....0..1....1..0....0..1....0..1....0..1....1..0....0..1....1..0
..1..0....0..1....1..0....1..0....0..1....0..1....0..1....1..1....0..1....0..1
..1..0....1..0....1..0....0..1....0..1....0..1....0..1....1..1....1..1....1..0
..1..0....0..1....0..1....0..1....0..1....0..1....1..0....1..1....1..1....0..1
..1..0....1..0....1..1....0..1....1..1....1..1....1..1....1..1....1..1....0..1

Links

A202555 Number of nX3 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

4, 17, 66, 235, 824, 2848, 9520, 31648, 104536, 339553, 1099666, 3549038, 11338836, 36160324, 115069316, 363700188, 1148126044, 3619072821, 11352513438, 35579368776, 111388887136, 347450537496, 1083054672896, 3373317547471
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 3 of A202560

Examples

			Some solutions for n=8
..0..1..0....0..1..0....1..0..0....0..0..0....0..0..0....0..1..1....1..0..0
..0..0..1....0..1..0....0..0..1....0..0..1....0..0..1....1..0..1....1..1..0
..0..0..1....0..0..1....0..0..1....0..0..1....0..0..1....1..1..0....1..0..1
..0..1..0....0..0..1....0..0..1....1..0..0....0..1..0....1..0..1....1..1..0
..0..1..0....1..0..1....0..1..1....0..1..0....0..1..0....0..1..1....0..1..1
..0..0..1....1..0..1....1..1..0....0..1..1....1..0..0....0..1..1....0..1..1
..1..0..0....0..1..1....1..0..1....0..1..1....0..0..1....0..1..1....1..0..1
..0..1..1....1..1..0....0..1..1....1..1..1....0..1..1....1..0..1....0..1..1

Links

A202556 Number of nX4 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

5, 37, 235, 1526, 9325, 57255, 342295, 2048759, 12097875, 71623580, 421070137, 2483305077, 14588495861, 85996521989, 505767515227, 2984447588198, 17583885515973, 103920730449567, 613473612747653, 3631554358770128
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 4 of A202560

Examples

			Some solutions for n=6
..1..0..1..0....0..0..0..0....0..0..1..0....0..0..0..0....0..1..0..0
..0..1..0..1....0..0..0..0....1..0..0..1....0..1..0..1....1..0..0..0
..0..1..0..1....0..0..0..0....0..1..0..1....1..0..0..1....0..0..0..1
..0..0..1..1....1..0..0..1....0..1..0..1....0..1..1..0....0..0..0..1
..1..1..0..0....0..0..1..1....1..0..1..1....0..0..1..1....0..0..1..0
..0..0..1..1....0..1..1..1....0..1..1..1....1..1..1..1....0..0..0..1

Links

A202557 Number of nX5 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

6, 73, 824, 9325, 103806, 1126437, 12176148, 130217215, 1384437590, 14638759530, 153859811582, 1612968122563, 16850540584514, 175613681682972, 1826081927556004, 18940152569016323, 196169872012941802
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 5 of A202560

Examples

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

Links

A202553 Number of n X n 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

2, 8, 66, 1526, 103806, 22360610, 15635171834, 36727396390100
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Diagonal of A202560

Examples

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

A202558 Number of nX6 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

7, 151, 2848, 57255, 1126437, 22360610, 436020774, 8531393529, 165372103634, 3209822188135, 61997477071836, 1199480307020988, 23143113343639189, 447443373807337136, 8639247851127637315
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 6 of A202560

Examples

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

A202559 Number of nX7 0,1 arrays with the row and column sums nondecreasing.

Original entry on oeis.org

8, 293, 9520, 342295, 12176148, 436020774, 15635171834, 557315843073, 19890838348436, 707996212911950, 25194289287709052
Offset: 1

Views

Author

R. H. Hardin Dec 21 2011

Keywords

Comments

Column 7 of A202560

Examples

			Some solutions for n=3
..0..1..0..0..1..0..0....0..0..0..0..1..0..0....0..0..1..0..1..0..1
..1..0..0..0..1..1..1....0..0..0..1..0..0..0....0..1..0..1..1..1..0
..0..0..1..1..0..1..1....0..1..1..0..0..1..1....1..1..1..1..0..1..1
Showing 1-9 of 9 results.

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