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 A264999 Number of n X n arrays containing n copies of 0..n-1 with rows and columns nondecreasing. 0
 1, 2, 7, 112, 4919, 1268728, 1001060834, 4031708477982 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A265005. LINKS Table of n, a(n) for n=1..8. EXAMPLE Some solutions for n=4 ..0..0..0..1....0..0..1..3....0..0..1..3....0..0..0..1....0..0..0..2 ..0..1..2..2....0..1..1..3....0..1..1..3....0..1..1..1....0..1..1..3 ..1..1..3..3....0..1..2..3....0..2..2..3....2..2..2..2....1..1..2..3 ..2..2..3..3....2..2..2..3....1..2..2..3....3..3..3..3....2..2..3..3 CROSSREFS Cf. A265005. Sequence in context: A045310 A224445 A000157 * A326940 A326964 A034902 Adjacent sequences: A264996 A264997 A264998 * A265000 A265001 A265002 KEYWORD nonn AUTHOR R. H. Hardin, Nov 29 2015 STATUS approved

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Last modified October 1 02:20 EDT 2023. Contains 365812 sequences. (Running on oeis4.)