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 A224161 Number of 5Xn 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing 1
 32, 324, 900, 1783, 3469, 6786, 13283, 25624, 48339, 88755, 158358, 274636, 463580, 763045, 1227226, 1932567, 2985495, 4532457, 6772837, 9975443, 14499382, 20820285, 29563005, 41542090, 57811531, 79725503, 109012056, 147861974 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 5 of A224158 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = (1/3628800)*n^10 - (1/241920)*n^9 + (13/60480)*n^8 - (1/2688)*n^7 + (15793/172800)*n^6 - (10013/11520)*n^5 + (3158927/362880)*n^4 - (461413/12096)*n^3 + (13189843/50400)*n^2 - (797567/840)*n + 2301 for n>6 EXAMPLE Some solutions for n=3 ..0..0..0....0..1..0....0..0..0....1..1..0....0..1..1....0..0..1....0..1..0 ..0..0..0....1..0..0....0..0..1....1..0..0....1..1..0....0..1..0....1..0..0 ..1..1..0....0..0..0....1..1..0....0..0..0....1..1..0....1..0..0....0..1..1 ..1..1..1....1..0..0....1..0..0....0..1..0....1..0..0....0..1..0....1..1..0 ..1..1..1....1..0..0....1..0..0....1..1..1....1..0..0....1..1..0....1..0..0 CROSSREFS Sequence in context: A368621 A221661 A221064 * A224412 A192075 A297611 Adjacent sequences: A224158 A224159 A224160 * A224162 A224163 A224164 KEYWORD nonn AUTHOR R. H. Hardin Mar 31 2013 STATUS approved

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Last modified September 18 10:34 EDT 2024. Contains 375999 sequences. (Running on oeis4.)