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A269008
Number of n X 5 binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.
1
10, 88, 1078, 10976, 109058, 1053432, 10002542, 93733440, 869397882, 7996744280, 73044076454, 663272676512, 5992284643698, 53897945082104, 482908211678430, 4311837258739840, 38381936117267690, 340717648957870424
OFFSET
1,1
COMMENTS
Column 5 of A269011.
LINKS
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
..1..0..0..0..0. .0..0..0..0..1. .1..0..0..0..1. .0..0..0..0..1
..1..0..0..1..0. .0..1..0..1..0. .1..0..0..0..1. .0..1..0..0..1
..0..0..1..0..0. .0..1..0..0..0. .0..1..0..0..0. .0..0..0..1..0
..1..0..1..0..1. .0..1..0..0..1. .0..0..0..0..0. .0..0..0..0..0
CROSSREFS
Cf. A269011.
Sequence in context: A298134 A163030 A302149 * A000826 A282555 A120923
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2016
STATUS
approved