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 A231956 Number of (n+1)X(7+1) 0..1 arrays with every element equal to some horizontal, vertical, diagonal or antidiagonal neighbor, with top left element zero 1
 12512, 3295580, 732691918, 171279257338, 40322931224352, 9478886429386626, 2227569337736429246, 523508634894235102896, 123033126916188723929280, 28914771603349522608580808, 6795434605065557633557620296 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A231957 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=1 ..0..1..0..0..0..1..1..1....0..1..1..1..1..0..0..1....0..1..0..0..0..1..1..0 ..0..0..1..1..0..0..0..0....0..0..1..0..0..0..0..1....1..0..0..1..1..1..0..0 CROSSREFS Sequence in context: A003416 A178278 A220026 * A252164 A045217 A298313 Adjacent sequences:  A231953 A231954 A231955 * A231957 A231958 A231959 KEYWORD nonn AUTHOR R. H. Hardin, Nov 15 2013 STATUS approved

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Last modified December 15 12:13 EST 2019. Contains 329999 sequences. (Running on oeis4.)