A146201 Number of n X n arrays of squares of integers summing to 7 with every element equal to at least one neighbor.

0, 12, 1640, 23650, 129116, 457330, 1265468, 2979098, 6251260, 12030146, 21635420, 36843178, 59979548, 94022930, 142714876, 210679610, 303552188, 428115298, 592444700, 806063306

Offset

2,2

Links

Table of n, a(n) for n=2..21.

Crossrefs

Sequence in context: A271435 A271436 A034280 * A009120 A078928 A202968

Adjacent sequences: A146198 A146199 A146200 * A146202 A146203 A146204

Keyword

nonn

Author

R. H. Hardin, Apr 14 2009

Status

approved