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 1-4 of 4 results.

A266159 Number of 4Xn arrays containing n copies of 0..4-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to 4-1.

Original entry on oeis.org

8, 16, 40, 272, 5512, 149232, 3741272, 88206664, 2011246768, 44947984536, 994530883200, 21910419274224, 482270052357104, 10627338833274072, 234722322559349072, 5199318920693106784, 115536868266599859880
Offset: 1

Views

Author

R. H. Hardin, Dec 22 2015

Keywords

Comments

Row 4 of A266158.

Examples

			Some solutions for n=6
..0..1..3..2..0..2....0..1..3..2..2..0....0..0..2..2..2..3....1..3..3..3..2..2
..1..3..3..2..0..0....1..1..3..3..2..0....1..0..2..3..3..1....1..3..2..2..0..0
..3..3..2..0..1..1....1..1..3..3..2..0....0..2..3..3..1..0....1..3..2..0..1..0
..2..2..0..1..1..3....1..3..2..2..0..0....0..2..3..1..1..1....3..2..0..1..1..0
		

Crossrefs

Cf. A266158.

A266156 Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to n-1.

Original entry on oeis.org

0, 0, 0, 16, 1528, 71328, 10109856, 949116288, 197260755456, 30713652142080, 8957030720294400, 2091857665680783360
Offset: 1

Views

Author

R. H. Hardin, Dec 22 2015

Keywords

Comments

Column 2 of A266158.

Examples

			Some solutions for n=6
..0..1....5..5....5..3....0..2....0..1....1..1....0..1....0..4....5..5....3..1
..2..2....1..1....3..5....4..0....0..3....0..3....2..5....2..2....3..1....0..0
..5..1....2..2....4..4....4..3....3..1....4..5....4..4....5..1....1..0....2..2
..3..5....4..0....0..2....5..5....5..5....5..2....2..5....5..1....2..2....4..4
..3..4....0..3....0..2....2..1....2..4....2..4....1..3....3..0....4..0....5..3
..4..0....4..3....1..1....1..3....2..4....0..3....0..3....4..3....4..3....1..5
		

Crossrefs

Cf. A266158.

A266157 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to n-1.

Original entry on oeis.org

0, 0, 0, 40, 85976, 55409952, 118728695856, 185137301064192, 762943408126138752
Offset: 1

Views

Author

R. H. Hardin, Dec 22 2015

Keywords

Comments

Column 3 of A266158.

Examples

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

Crossrefs

Cf. A266158.

A266160 Number of 5 X n arrays containing n copies of 0..5-1 with no element plus any horizontal, vertical or antidiagonal neighbor equal to 5-1.

Original entry on oeis.org

48, 1528, 85976, 7699384, 895747208, 121920870264, 17786755869336, 2703839577994464, 421768649710297424
Offset: 1

Views

Author

R. H. Hardin, Dec 22 2015

Keywords

Comments

Row 5 of A266158.

Examples

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

Crossrefs

Cf. A266158.
Showing 1-4 of 4 results.