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 A188419 Number of (4*n) X n binary arrays with rows in nonincreasing order, four 1's in every column and no more than three 1's in any row. 0
 1, 5, 81, 3217, 252493, 33313408, 6720357785, 1943505834628, 768799728447441 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 4 of A188416. LINKS EXAMPLE All solutions for 8 X 2 ..1..0....1..1....1..1....1..1....1..1 ..1..0....1..1....1..1....1..0....1..1 ..1..0....1..1....1..1....1..0....1..0 ..1..0....1..1....1..0....1..0....1..0 ..0..1....0..0....0..1....0..1....0..1 ..0..1....0..0....0..0....0..1....0..1 ..0..1....0..0....0..0....0..1....0..0 ..0..1....0..0....0..0....0..0....0..0 CROSSREFS Cf. A188416. Sequence in context: A009733 A009756 A336807 * A009634 A165435 A197443 Adjacent sequences: A188416 A188417 A188418 * A188420 A188421 A188422 KEYWORD nonn AUTHOR R. H. Hardin, Mar 30 2011 STATUS approved

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Last modified November 30 21:57 EST 2022. Contains 358453 sequences. (Running on oeis4.)