A255778 Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 and no column sum 0

1512, 8672, 58729, 327340, 1968584, 11945779, 71461994, 428975207, 2589583742, 15580188674, 93815267630, 565153391215, 3403888790453, 20499583169858, 123476068356687, 743701123471477, 4479335031465983, 26979398514408492

Offset

1,1

Comments

Column 3 of A255783

Links

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

R. H. Hardin, Empirical recurrence of order 78

Formula

Empirical recurrence of order 78 (see link above)

Example

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

Crossrefs

Cf. A255783

Sequence in context: A230402 A248718 A255334 * A236091 A239175 A037150

Adjacent sequences: A255775 A255776 A255777 * A255779 A255780 A255781

Keyword

nonn

Author

R. H. Hardin, Mar 06 2015

Status

approved