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 A204724 Number of (n+1)X(n+1) 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero 1
 544, 12744, 264998, 45026614, 3884003062, 3923500974342, 1379568377068438 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A204732 LINKS Table of n, a(n) for n=1..7. EXAMPLE Some solutions for n=4 ..1..0..1..2..0....3..4..1..4..3....1..2..4..0..4....3..1..3..1..1 ..4..4..0..4..2....1..2..2..2..1....4..0..4..2..2....2..1..2..1..4 ..0..1..1..2..0....3..4..1..4..3....1..2..4..0..4....3..1..3..1..1 ..4..2..2..0..2....1..2..2..2..1....3..2..0..2..1....2..1..2..1..4 ..0..1..1..2..0....3..4..1..4..3....4..0..4..4..2....3..1..3..1..1 CROSSREFS Sequence in context: A204732 A204725 A266136 * A168564 A223376 A022048 Adjacent sequences: A204721 A204722 A204723 * A204725 A204726 A204727 KEYWORD nonn AUTHOR R. H. Hardin Jan 18 2012 STATUS approved

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Last modified September 10 19:41 EDT 2024. Contains 375794 sequences. (Running on oeis4.)