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A268763 Number of nX5 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two exactly once. 1
10, 105, 762, 5170, 32056, 193573, 1129042, 6475898, 36505596, 203462597, 1122256900, 6140903312, 33367393732, 180252797855, 968778729426, 5183858768244, 27630592631158, 146768594783741, 777214421588348 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A268766.

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) +28*a(n-2) -62*a(n-3) -314*a(n-4) +78*a(n-5) +867*a(n-6) +6*a(n-7) -859*a(n-8) +46*a(n-9) +215*a(n-10) -8*a(n-11) -16*a(n-12)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A268766.

Sequence in context: A077671 A117833 A117832 * A300850 A210136 A068093

Adjacent sequences: A268760 A268761 A268762 * A268764 A268765 A268766

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 13 2016

STATUS

approved

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Last modified January 30 03:32 EST 2023. Contains 359939 sequences. (Running on oeis4.)