A235678 Number of (n+1)X(7+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.

33544, 4178316, 510685176, 62100488254, 7541722428052, 915571832243030, 111141360154581108, 13491148978500627866, 1637644495947011565142, 198787774684087795661506, 24130123777752397380536568

Offset: 1

Author

R. H. Hardin, Jan 13 2014

Keywords

• nonn

Comments

Column 7 of A235679

Examples

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

Links

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