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 A205056 Number of (n+1)X(n+1) 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing 0
 81, 7572, 4502701, 14708332687, 379440722213179 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A205063 LINKS Table of n, a(n) for n=1..5. EXAMPLE Some solutions for n=4 ..2..1..0..0..2....2..0..1..2..0....2..1..0..2..1....1..2..1..0..1 ..0..0..0..2..1....2..0..2..0..2....2..0..2..0..2....0..2..0..2..0 ..1..1..1..2..0....0..0..2..2..2....1..1..0..2..0....2..2..2..2..2 ..1..2..2..1..1....1..2..0..0..1....0..2..2..0..2....2..2..2..2..2 ..1..1..2..1..2....2..1..1..0..1....1..2..0..1..2....2..2..2..2..2 CROSSREFS Sequence in context: A185770 A222441 A206216 * A186132 A206504 A046172 Adjacent sequences: A205053 A205054 A205055 * A205057 A205058 A205059 KEYWORD nonn AUTHOR R. H. Hardin Jan 21 2012 STATUS approved

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Last modified September 16 19:27 EDT 2024. Contains 375977 sequences. (Running on oeis4.)