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 A204608 Number of (n+1)X(n+1) 0..1 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards 1
 16, 181, 4901, 313597, 45645661, 15468240213, 11909737623605, 21224284541503781, 86355017921168786869, 809181619551978590150053, 17365790350293711986891075413, 856356938035890178758703855462533 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A204616 LINKS R. H. Hardin, Table of n, a(n) for n = 1..15 EXAMPLE Some solutions for n=4 ..1..0..1..0..0....1..0..0..0..0....1..1..1..1..0....0..1..0..1..1 ..0..0..0..0..0....1..0..1..0..1....1..1..1..1..0....1..1..0..1..1 ..0..1..0..0..0....1..0..1..0..1....1..1..1..1..0....1..1..0..1..1 ..0..1..0..1..0....0..0..0..0..0....0..0..0..0..0....1..1..0..1..1 ..0..1..0..1..0....1..1..1..1..0....1..0..1..1..1....1..1..0..0..1 CROSSREFS Sequence in context: A016909 A001455 A199018 * A279282 A231135 A230992 Adjacent sequences: A204605 A204606 A204607 * A204609 A204610 A204611 KEYWORD nonn AUTHOR R. H. Hardin Jan 17 2012 STATUS approved

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Last modified March 29 17:51 EDT 2023. Contains 361599 sequences. (Running on oeis4.)