A203961 Number of (n+1)X5 0..2 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) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing

1579, 45307, 2774984, 157316750, 7594654075, 307121002440, 10649020852202, 323057300197928, 8726668452309006, 212841486133370354, 4739849013582481100, 97256290892559264697, 1852532779115705386166, 32962761352984953106390

Offset

1,1

Comments

Column 4 of A203965

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..2..1..1..1..1....2..2..2..2..2....0..1..2..1..0....1..1..2..1..1
..1..2..2..2..2....2..2..2..2..2....1..1..0..1..2....1..2..1..2..2
..2..2..2..2..2....2..2..2..2..2....1..1..2..1..1....2..1..2..2..2
..2..2..2..2..2....2..2..2..2..2....0..2..1..2..2....1..2..2..2..2
..2..2..2..2..2....2..2..2..2..2....2..1..2..2..1....1..2..2..2..2

Crossrefs

Sequence in context: A183637 A223399 A210294 * A253421 A023082 A216064

Adjacent sequences: A203958 A203959 A203960 * A203962 A203963 A203964

Keyword

nonn

Author

R. H. Hardin Jan 08 2012

Status

approved