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 A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one 1
 9, 56, 841, 43983, 6507601, 2641967397, 3036560660329, 9981109155098235, 93538123901225727364, 2480246214908598898309094, 186787722909431013956841219409, 39975590681225962593258073864460074 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A231977 LINKS R. H. Hardin, Table of n, a(n) for n = 1..15 EXAMPLE Some solutions for n=2 ..1..0..0....0..0..0....0..0..1....0..0..1....1..0..0....0..0..0....0..1..0 ..0..0..0....1..1..1....1..0..0....1..0..1....1..0..0....0..0..0....0..0..0 ..0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..1..1....0..0..1 CROSSREFS Sequence in context: A274553 A221801 A131468 * A197530 A086888 A231315 Adjacent sequences:  A231967 A231968 A231969 * A231971 A231972 A231973 KEYWORD nonn AUTHOR R. H. Hardin, Nov 16 2013 STATUS approved

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Last modified January 18 17:18 EST 2022. Contains 350455 sequences. (Running on oeis4.)