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 1-5 of 5 results.

A202712 Number of n X n 0..2 arrays with row sums equal and no column sum equal to the previous.

Original entry on oeis.org

3, 10, 624, 173860, 421158558, 8496020082856
Offset: 1

Views

Author

R. H. Hardin Dec 23 2011

Keywords

Comments

Column 2 of A202714

Examples

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

A202715 Number of 3X3 0..n arrays with row sums equal and no column sum equal to the previous.

Original entry on oeis.org

38, 624, 4740, 23036, 83994, 250668, 645968, 1487832, 3136542, 6155240, 11386212, 20043612, 33825674, 55046532, 86791272, 133093760, 199141470, 291506184, 418405556, 589993572, 818685762, 1119516332, 1510533960, 2013232464
Offset: 1

Views

Author

R. H. Hardin Dec 23 2011

Keywords

Comments

Row 3 of A202714

Examples

			Some solutions for n=5
..1..5..1....1..0..2....1..2..5....3..3..0....5..2..3....5..1..1....0..2..2
..1..3..3....1..1..1....4..1..3....3..1..2....3..5..2....4..0..3....3..1..0
..4..2..1....3..0..0....4..0..4....4..1..1....1..4..5....1..5..1....1..2..1

Links

A202711 Number of n X n 0..1 arrays with row sums equal and no column sum equal to the previous.

Original entry on oeis.org

2, 2, 38, 838, 75302, 27842760, 37121438930, 192513188823366
Offset: 1

Views

Author

R. H. Hardin Dec 23 2011

Keywords

Comments

Column 1 of A202714

Examples

			Some solutions for n=5
..0..1..0..1..1....1..1..0..1..0....1..0..1..0..0....1..0..1..0..0
..1..1..0..1..0....1..1..0..1..0....0..1..0..1..0....0..1..0..0..1
..0..0..1..1..1....1..1..0..0..1....1..0..1..0..0....0..1..0..0..1
..1..0..1..0..1....0..1..1..0..1....0..1..1..0..0....0..1..1..0..0
..1..0..1..1..0....1..1..0..0..1....1..0..0..1..0....0..0..0..1..1

A202713 Number of n X n 0..3 arrays with row sums equal and no column sum equal to the previous.

Original entry on oeis.org

4, 28, 4740, 7788648, 189412482924
Offset: 1

Views

Author

R. H. Hardin Dec 23 2011

Keywords

Comments

Column 3 of A202714

Examples

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

A202716 Number of 4X4 0..n arrays with row sums equal and no column sum equal to the previous.

Original entry on oeis.org

838, 173860, 7788648, 147823100, 1631287078, 12388736288, 71598143176, 335967493328, 1337851154982, 4665608624084, 14584276374720
Offset: 1

Views

Author

R. H. Hardin Dec 23 2011

Keywords

Comments

Row 4 of A202714

Examples

			Some solutions for n=1
..1..0..1..0....1..0..1..0....1..0..1..1....1..1..0..0....0..1..0..0
..0..1..1..0....0..1..1..0....1..1..1..0....0..1..1..0....0..0..0..1
..1..1..0..0....0..1..0..1....1..1..0..1....1..1..0..0....0..1..0..0
..1..0..1..0....1..1..0..0....1..1..0..1....1..1..0..0....0..0..0..1
Showing 1-5 of 5 results.

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