A233065 Number of (4+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..4+1} nondecreasing

66, 564, 4393, 30692, 197625, 1180594, 6637131, 35376058, 180164000, 881727864, 4167848342, 19104362313, 85219992355, 371017908349, 1580512646968, 6602183440874, 27094731309792, 109419938432611, 435460987461844

Offset

1,1

Comments

Row 4 of A233062

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A155022 A202639 A175260 * A129218 A046409 A128952

Adjacent sequences: A233062 A233063 A233064 * A233066 A233067 A233068

Keyword

nonn

Author

R. H. Hardin, Dec 03 2013

Status

approved