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 A203494 Number of 4Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns 0
 3, 82, 3760, 173860, 8518564, 442135180, 24148894412 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 4 of A203491 LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=5 ..2..1..0..0..2....1..2..2..0..0....0..1..2..1..2....1..2..1..1..0 ..0..0..2..1..2....1..1..2..0..1....1..2..1..0..2....1..2..0..1..1 ..1..1..1..1..1....2..1..2..0..0....1..1..1..2..1....2..0..2..0..1 ..0..2..2..0..1....0..2..2..0..1....1..2..1..1..1....2..0..2..1..0 CROSSREFS Sequence in context: A055590 A037111 A067202 * A319836 A356503 A158995 Adjacent sequences: A203491 A203492 A203493 * A203495 A203496 A203497 KEYWORD nonn AUTHOR R. H. Hardin Jan 02 2012 STATUS approved

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Last modified September 28 18:05 EDT 2023. Contains 365736 sequences. (Running on oeis4.)