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 A186132 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace 0
 81, 7686, 3090564, 5108761008, 35143110551556, 1006890732907711236, 120347170141816347874560, 60068131623385389414240300432 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A186141 LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for 3X3 ..2..1..1....1..1..2....0..2..0....1..2..0....1..0..0....1..2..0....2..0..2 ..0..2..0....2..1..0....0..2..1....2..2..0....0..2..2....0..1..1....2..1..2 ..0..0..1....2..2..1....0..1..2....2..2..1....1..0..2....1..0..1....0..0..0 CROSSREFS Sequence in context: A222441 A206216 A205056 * A206504 A046172 A123847 Adjacent sequences: A186129 A186130 A186131 * A186133 A186134 A186135 KEYWORD nonn AUTHOR R. H. Hardin Feb 13 2011 STATUS approved

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Last modified August 8 04:35 EDT 2024. Contains 375018 sequences. (Running on oeis4.)