A203733 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A203733

Number of (n+1)X(n+1) 0..3 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively

90, 3912, 178836, 7927078, 325435792, 12852015708, 513715285322, 21463727483530, 946913403808620, 43905367195100872, 2117084835230553844, 105066513574419532846

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

OFFSET

1,1

COMMENTS

Diagonal of A203741

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=4

..3..0..0..1..1....2..1..0..1..2....0..1..0..3..1....0..3..1..1..3

..0..3..3..3..3....1..2..3..3..3....2..1..2..1..3....2..1..3..3..3

..1..3..3..3..3....2..2..3..3..3....0..3..2..3..2....0..3..3..3..3