A252453 Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 4 6 or 7

747, 2643, 11334, 48170, 203320, 863351, 3675259, 15672575, 66857788, 285055325, 1215600193, 5185581482, 22120635088, 94356110010, 402488550644, 1716913274642, 7323917433852, 31241941469786, 133270541834839

Offset

1,1

Comments

Column 4 of A252457

Links

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

R. H. Hardin, Empirical recurrence of order 69

Formula

Empirical recurrence of order 69 (see link above)

Example

Some solutions for n=4
..3..2..3..3..3..3....3..1..1..1..1..1....3..1..1..1..1..1....1..3..1..1..3..1
..3..3..3..3..2..3....1..1..3..1..1..1....1..1..3..1..1..1....1..3..1..1..1..3
..2..3..3..3..3..3....1..1..1..1..1..1....1..1..1..1..3..1....1..3..1..1..1..1
..3..3..3..3..3..3....1..1..1..1..1..3....1..1..1..1..1..1....1..3..1..1..1..1
..3..3..3..3..3..3....1..1..1..3..1..1....1..1..1..3..1..1....1..3..1..1..1..3
..3..2..3..3..2..3....1..3..1..1..1..1....1..1..1..1..1..1....1..3..1..1..1..1

Crossrefs

Sequence in context: A235732 A235513 A252560 * A252946 A242150 A184024

Adjacent sequences: A252450 A252451 A252452 * A252454 A252455 A252456

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved