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 A289646 Number of n X 3 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1. 1
 0, 11, 61, 607, 3160, 31271, 183390, 1714758, 10957160, 97430209, 660963859, 5659723958, 40059954256, 334030499016, 2436982696260, 19950172380212, 148739597215073, 1202453728957318, 9105730676248720, 72992556634640541 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 3 of A289651. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..1..0..0. .0..0..0. .1..0..0. .0..1..1. .1..0..0. .0..0..1. .0..1..1 ..0..0..1. .0..0..0. .0..1..0. .0..1..0. .0..0..1. .0..1..1. .0..0..0 ..0..0..1. .0..1..0. .0..1..1. .0..0..0. .0..1..1. .0..0..0. .0..1..0 ..1..0..1. .1..1..0. .0..1..0. .1..1..0. .1..0..0. .0..0..0. .1..1..0 CROSSREFS Cf. A289651. Sequence in context: A092164 A088545 A259257 * A020454 A009016 A191596 Adjacent sequences:  A289643 A289644 A289645 * A289647 A289648 A289649 KEYWORD nonn AUTHOR R. H. Hardin, Jul 09 2017 STATUS approved

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Last modified November 25 08:30 EST 2020. Contains 338623 sequences. (Running on oeis4.)