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 A206859 Number of nX4 0..2 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal 1
 69, 4761, 192575, 7598355, 314918295, 13093461017, 541018725304, 22336434688428, 923097673638406, 38158725414249736, 1577142038208976046, 65180147142970134040, 2693823565225042593429, 111334863067931222656792 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A206863 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..0..1..2..2....1..2..2..2....0..2..2..0....0..2..0..1....1..1..1..0 ..2..2..0..0....1..2..2..2....1..0..0..0....2..0..1..1....1..2..2..2 ..0..2..2..0....1..2..2..1....2..2..1..2....0..2..1..1....0..2..2..2 ..0..1..1..1....1..2..2..1....0..1..2..2....2..0..0..1....2..0..0..1 CROSSREFS Sequence in context: A017732 A252998 A202978 * A207204 A207210 A206953 Adjacent sequences:  A206856 A206857 A206858 * A206860 A206861 A206862 KEYWORD nonn AUTHOR R. H. Hardin Feb 13 2012 STATUS approved

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Last modified August 16 00:08 EDT 2022. Contains 356150 sequences. (Running on oeis4.)