A269214 -id:A269214 - cp's OEIS frontend

A269220 Number of 7Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

0, 7375872, 2039727744, 599456856000, 163535201141376, 43468685827935816, 11273191243423937904, 2872961996154823592256, 722010748558146090563664, 179436639887553691981747008, 44187481124719769649267286128

Offset: 1

R. H. Hardin, Feb 20 2016

nonn

Row 7 of A269214.

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

R. H. Hardin, Table of n, a(n) for n = 1..210

Cf. A269214.

A269208 Number of n X n 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Original entry on oeis.org

0, 96, 18048, 12548544, 30541426560, 292321215814512, 11273191243423937904, 1787171501783334054571344, 1177416215650225851496983234096, 3247635013385894059877839733594599296

Offset: 1

R. H. Hardin, Feb 20 2016

nonn

Diagonal of A269214.

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

Cf. A269214.

cp's OEIS Frontend

A269220 Number of 7Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Views

Author

Keywords

Comments

Examples

Links

Crossrefs