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 A188826 Number of 4Xn binary arrays without the pattern 0 1 diagonally or antidiagonally 1
 16, 25, 81, 256, 841, 2704, 8836, 28561, 93025, 301401, 980100, 3179089, 10329796, 33524100, 108889225, 353477601, 1147922161, 3726858304, 12101980081, 39292754176, 127587553636, 414263438689, 1345129081209, 4367552437161 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 4 of A188824 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 FORMULA Empirical: a(n) = 3*a(n-1) +5*a(n-2) -15*a(n-3) +3*a(n-4) +5*a(n-5) -a(n-6) for n>7 EXAMPLE Some solutions for 4X3 ..0..1..1....0..1..0....1..1..1....0..1..0....1..1..0....0..1..0....1..1..1 ..0..0..1....1..0..1....1..1..1....0..0..0....1..0..1....1..0..0....1..1..1 ..0..0..0....0..0..0....0..0..1....0..0..0....0..1..0....0..0..0....1..1..1 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..1..1 CROSSREFS Sequence in context: A065408 A112392 A109685 * A152152 A061101 A166672 Adjacent sequences:  A188823 A188824 A188825 * A188827 A188828 A188829 KEYWORD nonn AUTHOR R. H. Hardin Apr 11 2011 STATUS approved

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