BBC Russian

A232872

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

14, 45, 130, 311, 637, 1235, 2314, 4200, 7228, 11846, 18788, 29081, 44132, 65107, 93928, 132887, 185250, 254624, 345006, 461565, 610287, 798949, 1035882, 1330097, 1692861, 2137519, 2679053, 3333526, 4120225, 5060874, 6180451, 7506470, 9070729

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 2 of A232877

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..111

EXAMPLE

Some solutions for n=5

..0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0....0..0..0

..1..0..0....0..1..0....1..0..0....0..0..0....1..0..0....1..0..0....0..0..0

..1..0..0....0..1..0....0..1..0....0..0..0....1..0..1....0..1..0....0..0..0

..0..1..1....0..1..0....0..0..1....0..0..0....1..0..1....0..1..0....0..0..1

..0..1..1....0..0..1....0..0..1....0..0..0....0..1..1....1..0..1....0..0..1

..0..1..1....0..0..1....0..0..1....0..0..1....0..1..1....0..1..1....0..1..1

CROSSREFS

Sequence in context: A092350 A090197 A010742 * A232855 A232791 A243384

Adjacent sequences: A232869 A232870 A232871 * A232873 A232874 A232875

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 01 2013

STATUS

approved