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 A186569 Number of (n+2) X (n+2) 0..5 arrays with every 3 X 3 subblock commuting with each horizontal and vertical neighbor 3 X 3 subblock. 0
 10077696, 1441, 64794, 1831246, 5762806, 7092466, 10131226, 18983086, 52102546, 250276606, 1023882766, 3333167026, 13883727886, 48468351346, 146915043406 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A186570. LINKS Table of n, a(n) for n=1..15. EXAMPLE Some solutions for 4 X 4 ..0..0..5..5....0..0..0..0....4..0..0..3....4..0..0..3....4..4..3..4 ..0..0..0..4....3..0..0..0....0..4..0..0....0..4..0..0....3..4..4..3 ..0..0..0..0....0..3..0..0....0..0..4..0....0..0..4..0....4..3..4..4 ..0..0..0..0....4..0..3..0....3..0..0..4....1..0..0..4....4..4..3..4 CROSSREFS Cf. A186570. Sequence in context: A258443 A183670 A176766 * A186570 A250597 A016869 Adjacent sequences: A186566 A186567 A186568 * A186570 A186571 A186572 KEYWORD nonn AUTHOR R. H. Hardin, Feb 23 2011 STATUS approved

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Last modified July 21 22:43 EDT 2024. Contains 374478 sequences. (Running on oeis4.)