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 A183405 Number of nX4 binary arrays with each sum of a(1..i,1..j) no greater than i*j/2 1
 6, 78, 850, 12203, 154079, 2291035, 30897341, 467710777, 6547006490, 100186985054, 1436382214914, 22141316955632, 322776632209433, 5001593745014347, 73814087963795016, 1148305241863914557 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A183407 LINKS R. H. Hardin, Table of n, a(n) for n = 1..28 EXAMPLE Some solutions for 6X4 ..0..0..1..0....0..1..0..0....0..0..1..0....0..1..0..0....0..0..0..0 ..1..0..0..0....0..0..0..0....0..0..1..0....0..1..0..0....1..1..1..0 ..0..0..1..0....0..1..1..0....1..1..0..0....0..0..0..0....0..0..1..0 ..1..0..1..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0 ..0..0..0..0....0..1..1..0....0..1..1..0....1..0..1..0....0..0..0..0 ..0..1..1..1....1..1..1..1....1..1..1..0....0..0..0..1....1..0..0..1 CROSSREFS Sequence in context: A306096 A370714 A145360 * A068884 A186663 A069670 Adjacent sequences: A183402 A183403 A183404 * A183406 A183407 A183408 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2011 STATUS approved

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Last modified August 2 19:53 EDT 2024. Contains 374875 sequences. (Running on oeis4.)