A232857 Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing

41, 336, 2942, 24520, 178630, 1054179, 4995346, 20815986, 81415483, 310059665, 1152701225, 4126983674, 14018997429, 44827689272, 135234277395, 388552022417

Offset

1,1

Comments

Column 4 of A232860

Links

Table of n, a(n) for n=1..16.

Example

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

Crossrefs

Sequence in context: A282867 A222990 A300775 * A232793 A219080 A184060

Adjacent sequences: A232854 A232855 A232856 * A232858 A232859 A232860

Keyword

nonn

Author

R. H. Hardin, Dec 01 2013

Status

approved