A252472 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8

17061, 24331, 213791, 1741406, 14105131, 115183323, 937980722, 7634089567, 62282795777, 507708323820, 4135550418695, 33696297343259, 274629581667470, 2238121992115275, 18238035152919778, 148617809035821934

Offset

1,1

Comments

Column 7 of A252473

Links

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

Example

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

Crossrefs

Sequence in context: A252647 A332100 A252129 * A233618 A233619 A233611

Adjacent sequences: A252469 A252470 A252471 * A252473 A252474 A252475

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved