A235553 Number of (n+1)X(5+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise

660, 9320, 184281, 3824372, 74362722, 1271453587, 19182239308, 256273383832, 3086943812776, 33826465004088, 341964622301035, 3210882675698422, 28280047570300320, 234710501561552376, 1848700471390541492

Offset

1,1

Comments

Column 5 of A235555

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

Some solutions for n=3
..1..0..1..0..1..0....0..1..1..1..0..0....1..0..1..0..0..0....0..1..1..1..0..1
..0..1..0..0..0..0....1..1..0..1..0..1....1..1..1..0..0..0....1..1..1..1..0..1
..1..0..0..0..0..1....0..1..0..1..1..1....1..0..0..1..0..1....1..1..0..1..1..0
..1..0..1..0..1..1....0..0..1..0..1..0....1..1..0..1..1..1....1..1..1..0..0..0

Crossrefs

Sequence in context: A235770 A204538 A204534 * A342994 A252457 A252450

Adjacent sequences: A235550 A235551 A235552 * A235554 A235555 A235556

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved