A146200 Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 6 and every element equal to at least one neighbor.

0, 168, 107441, 902774, 3692732, 11295174, 28865676, 65031988, 133191360, 253050012, 452373900, 768956436, 1252803248, 1968533980

Offset

5,2

Links

Table of n, a(n) for n=5..18.

Crossrefs

Sequence in context: A364178 A275456 A185404 * A159394 A008699 A223125

Adjacent sequences: A146197 A146198 A146199 * A146201 A146202 A146203

Keyword

nonn

Author

R. H. Hardin Apr 14 2009

Status

approved