A235771 Number of (n+1)X(6+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

1456, 15185, 166904, 1874171, 21858973, 256515598, 3001277411, 34219649525, 377305772901, 3996716802464, 40551532587028, 394526377977006, 3678627148220061, 32961358198928201, 284089095758128220

Offset

1,1

Comments

Column 6 of A235772

Links

R. H. Hardin, Table of n, a(n) for n = 1..43

Example

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

Crossrefs

Sequence in context: A289822 A145529 A203393 * A351549 A235554 A255345

Adjacent sequences: A235768 A235769 A235770 * A235772 A235773 A235774

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved