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A269072 Number of nX5 binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once. 1
23, 185, 1887, 17713, 165607, 1529241, 14011359, 127528641, 1154377943, 10400164377, 93314875007, 834244316721, 7434343205095, 66061046189497, 585498663953471, 5177144091416833, 45680435610848791, 402277442193052665 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A269075.

LINKS

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

FORMULA

Empirical: a(n) = 24*a(n-1) -198*a(n-2) +584*a(n-3) +137*a(n-4) -2864*a(n-5) +1132*a(n-6) +4336*a(n-7) -1391*a(n-8) -2280*a(n-9) +90*a(n-10) +200*a(n-11) -25*a(n-12)

EXAMPLE

Some solutions for n=4

..0..1..0..0..1. .1..0..0..1..0. .1..0..1..0..1. .1..0..1..0..1

..1..0..0..0..1. .1..0..1..0..0. .1..0..1..0..0. .0..0..1..0..1

..1..0..0..0..0. .1..0..0..0..1. .0..0..0..0..1. .0..1..0..0..1

..0..0..0..0..1. .0..0..0..0..1. .0..0..0..1..0. .0..0..0..0..1

CROSSREFS

Cf. A269075.

Sequence in context: A229426 A274587 A302200 * A125360 A126518 A167467

Adjacent sequences:  A269069 A269070 A269071 * A269073 A269074 A269075

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 19 2016

STATUS

approved

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Last modified May 16 18:41 EDT 2022. Contains 353720 sequences. (Running on oeis4.)