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 A185488 Number of (n+1)X(n+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum 0
 0, 128, 5936, 1020072, 512228678, 835833221744 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A185497 LINKS Table of n, a(n) for n=1..6. EXAMPLE Some solutions for 4X4 ..0..1..1..1....0..0..0..0....1..0..0..1....1..0..0..0....1..1..1..1 ..0..1..1..1....1..1..1..1....0..0..1..1....0..1..1..1....1..0..0..0 ..1..0..1..0....0..0..0..0....1..1..1..0....1..1..0..1....1..1..1..1 ..1..0..1..0....1..1..0..1....0..0..1..1....0..1..0..1....0..1..0..1 CROSSREFS Sequence in context: A240931 A282527 A297093 * A283690 A008791 A201239 Adjacent sequences: A185485 A185486 A185487 * A185489 A185490 A185491 KEYWORD nonn AUTHOR R. H. Hardin Jan 29 2011 STATUS approved

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Last modified August 10 14:52 EDT 2024. Contains 375056 sequences. (Running on oeis4.)