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 A188451 Number of (3*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 3 ones in every column 0
 0, 0, 5, 139, 4944, 244490, 15980350, 1330789145, 137418347276, 17218246261956 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 3 of A188449 LINKS Table of n, a(n) for n=1..10. EXAMPLE All solutions for 9X3 ..1..1..1....1..1..1....1..1..0....1..1..1....1..1..1 ..1..0..1....1..1..0....1..0..1....1..1..0....1..1..0 ..1..0..0....1..0..1....1..0..0....1..0..0....1..0..1 ..0..1..1....0..1..0....0..1..1....0..1..1....0..1..1 ..0..1..0....0..0..1....0..1..0....0..0..1....0..0..0 ..0..0..0....0..0..0....0..0..1....0..0..0....0..0..0 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0 CROSSREFS Sequence in context: A224826 A122911 A103235 * A362993 A061463 A279017 Adjacent sequences: A188448 A188449 A188450 * A188452 A188453 A188454 KEYWORD nonn AUTHOR R. H. Hardin Mar 31 2011 STATUS approved

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Last modified December 2 09:50 EST 2023. Contains 367517 sequences. (Running on oeis4.)