A233370 Number of (5+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..5+1} nondecreasing.

57, 849, 10477, 117318, 1206656, 11689997, 106244229, 895749726, 6977171013, 50507900590

Offset

1,1

Comments

Row 5 of A233366

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..0..0..0..0....1..0..1..0..0....0..0..0..0..0....0..0..1..0..0
..1..0..1..0..0....0..0..0..0..1....1..0..0..0..0....1..0..1..1..0
..0..1..0..0..1....1..0..0..0..1....0..1..0..0..0....0..1..1..0..1
..0..0..0..1..1....0..0..0..1..1....0..0..1..1..1....1..0..0..1..1
..0..0..1..1..1....1..0..0..1..1....0..0..1..1..1....1..0..0..1..1
..0..0..1..1..1....0..1..1..1..1....0..0..1..1..1....0..1..1..1..1

Crossrefs

Sequence in context: A210156 A210149 A254783 * A387848 A008390 A231311

Adjacent sequences: A233367 A233368 A233369 * A233371 A233372 A233373

Keyword

nonn

Author

R. H. Hardin, Dec 08 2013

Status

approved