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 A231991 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one 1
 4, 32, 1024, 80511, 15594601, 9716967198, 17330552348004, 86052358301456560, 1193370539733163272100, 47736311347811120780540634, 5427560264549933547128560973449, 1747506522236821289436659004322720324 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A231997 LINKS R. H. Hardin, Table of n, a(n) for n = 1..19 EXAMPLE Some solutions for n=4 ..1..0..0..0..1....0..0..0..0..0....0..0..0..1..0....0..0..0..1..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....0..0..0..1..1....0..1..0..1..0....1..0..0..0..1 ..0..0..0..0..0....0..0..0..0..0....1..0..0..0..0....0..0..0..0..0 ..1..0..0..0..0....1..0..0..0..1....0..0..0..0..0....0..1..0..0..1 CROSSREFS Sequence in context: A136471 A243918 A298896 * A028369 A081790 A053005 Adjacent sequences: A231988 A231989 A231990 * A231992 A231993 A231994 KEYWORD nonn AUTHOR R. H. Hardin, Nov 16 2013 STATUS approved

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Last modified January 29 23:01 EST 2023. Contains 359939 sequences. (Running on oeis4.)