A232856 Number of (n+1)X(3+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..3+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.

25, 130, 650, 2942, 11445, 37040, 101369, 257799, 633068, 1515898, 3535659, 7923813, 16924203, 34435189, 67351417, 127875041, 237092930, 430410822, 764368249, 1325374142, 2247755925, 3735891528, 6105155090, 9831802225

Offset

1,1

Comments

Column 3 of A232860

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

Some solutions for n=5
..1..0..0..0....1..0..1..0....0..1..0..0....1..1..0..0....0..0..1..0
..1..0..0..1....1..0..1..0....1..0..1..0....0..0..1..1....1..0..1..0
..1..0..1..1....0..0..0..1....0..0..0..1....1..0..1..1....1..1..0..1
..1..0..1..1....0..1..0..1....1..0..0..1....0..1..1..1....0..0..1..1
..0..1..1..1....0..1..0..1....0..0..1..1....0..1..1..1....1..0..1..1
..0..1..1..1....0..0..1..1....0..1..1..1....0..1..1..1....0..1..1..1

Crossrefs

Sequence in context: A045166 A365872 A232873 * A232792 A305956 A367104

Adjacent sequences: A232853 A232854 A232855 * A232857 A232858 A232859

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved