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 A224275 Number of n X n 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing 0
 4, 160, 13683, 1334973, 137489538, 14587480744, 1597855917875, 182011677068828, 21714188491890254, 2721720866571310952, 357937736330145145387 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A224281 LINKS Table of n, a(n) for n=1..11. EXAMPLE Some solutions for n=3 ..2..0..0....0..1..1....0..0..1....0..0..0....0..0..1....2..1..1....0..0..0 ..2..2..1....2..2..2....3..2..2....0..1..1....3..3..1....3..2..1....0..0..1 ..3..3..3....2..3..0....2..2..2....2..2..1....3..3..2....2..2..3....1..2..1 CROSSREFS Sequence in context: A278770 A264568 A224044 * A224198 A104133 A214007 Adjacent sequences: A224272 A224273 A224274 * A224276 A224277 A224278 KEYWORD nonn AUTHOR R. H. Hardin Apr 02 2013 STATUS approved

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Last modified August 11 16:53 EDT 2024. Contains 375073 sequences. (Running on oeis4.)