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 A206988 Number of n X n 0..1 arrays avoiding 0 0 0 horizontally and 1 1 1 vertically 0
 2, 16, 174, 6510, 516724, 88819714, 37849652838, 36679559167444, 82039130470188394, 429029852979061855882, 5194153238714571994969836, 145816870651378340099973452074 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A206994 LINKS EXAMPLE Some solutions for n=4 ..1..1..1..1....1..0..1..0....1..0..0..1....1..0..1..0....0..1..0..1 ..1..1..0..1....1..1..0..1....0..1..1..0....1..0..0..1....1..1..1..0 ..0..0..1..0....0..1..0..0....1..0..1..1....0..1..0..0....0..0..1..0 ..1..1..1..0....1..0..1..0....1..1..0..1....0..1..0..0....0..1..0..1 CROSSREFS Sequence in context: A155659 A108999 A138014 * A217360 A052606 A011553 Adjacent sequences:  A206985 A206986 A206987 * A206989 A206990 A206991 KEYWORD nonn AUTHOR R. H. Hardin Feb 14 2012 STATUS approved

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Last modified September 27 03:21 EDT 2020. Contains 337380 sequences. (Running on oeis4.)