A251831 Number of (n+2)X(2+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 3 4 5 or 6

3354, 27554, 262404, 2298772, 20314774, 182241310, 1624862992, 14480032642, 129225388882, 1152830227806, 10283104113928, 91735092773142, 818352658155236, 7300253070215844, 65123717708742520, 580952471294611872

Offset

1,1

Comments

Column 2 of A251836

Links

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

R. H. Hardin, Empirical recurrence of order 65

Formula

Empirical recurrence of order 65 (see link above)

Example

Some solutions for n=2
..0..1..0..0....3..3..3..3....3..2..3..3....2..2..3..3....2..3..2..3
..1..0..0..0....3..2..3..3....2..2..3..2....3..3..3..1....3..2..3..3
..0..0..1..0....2..2..3..2....2..3..3..2....2..3..3..3....3..2..3..2
..1..0..1..1....3..3..3..2....3..3..3..3....2..3..2..3....2..3..3..3

Crossrefs

Sequence in context: A206575 A207580 A207055 * A104938 A179704 A222154

Adjacent sequences: A251828 A251829 A251830 * A251832 A251833 A251834

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved