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 A267993 Number of 4Xn arrays containing n copies of 0..4-1 with row sums and column sums nondecreasing. 0
 1, 189, 7477, 425488, 20924732, 1102544770, 53379559302, 2649768641528 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 4 of A267990. LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for n=3 ..0..0..3....1..0..2....0..1..2....0..0..1....1..0..0....1..2..0....0..0..0 ..1..2..0....2..1..0....0..2..1....2..1..2....0..3..2....1..1..3....2..1..2 ..1..3..1....1..2..3....1..3..2....0..3..3....1..2..3....2..0..3....1..2..3 ..2..2..3....0..3..3....3..0..3....1..3..2....1..2..3....0..2..3....1..3..3 CROSSREFS Cf. A267990. Sequence in context: A211819 A266135 A133351 * A286791 A076012 A092136 Adjacent sequences: A267990 A267991 A267992 * A267994 A267995 A267996 KEYWORD nonn AUTHOR R. H. Hardin, Jan 23 2016 STATUS approved

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Last modified July 19 19:39 EDT 2024. Contains 374436 sequences. (Running on oeis4.)