A253739 Number of (n+2)X(7+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal sum minus antidiagonal sum unequal to its neighbors horizontally and vertically

222820, 148328, 243796, 922004, 3230352, 11094376, 40265740, 158864740, 622829668, 2349461712, 8925387720, 34829656816, 135741728872, 519828704980, 1994445578168, 7734803041588, 30010818872708, 115433535492588

Offset

1,1

Comments

Column 7 of A253740

Links

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

Example

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

Crossrefs

Sequence in context: A253990 A253997 A258907 * A274809 A180949 A165411

Adjacent sequences: A253736 A253737 A253738 * A253740 A253741 A253742

Keyword

nonn

Author

R. H. Hardin, Jan 11 2015

Status

approved