A235404 Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise

2500, 87902, 4133417, 129700247, 4053275322, 93483052039, 2134796334622, 38976941613238, 707418121001887, 10777864371304064, 163561065322858257, 2151485281168208904, 28216803683161793132, 328115899316857661522

Offset

1,1

Comments

Column 3 of A235406

Links

R. H. Hardin, Table of n, a(n) for n = 1..194

Example

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

Crossrefs

Sequence in context: A204225 A251115 A235439 * A120408 A031778 A031688

Adjacent sequences: A235401 A235402 A235403 * A235405 A235406 A235407

Keyword

nonn

Author

R. H. Hardin, Jan 10 2014

Status

approved