A146204 Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 7 and every element equal to at least one neighbor.

0, 48, 281740, 6164286, 36452297, 137540680, 403558893

Offset

5,2

Links

Table of n, a(n) for n=5..11.

Crossrefs

Sequence in context: A037947 A282596 A272262 * A269561 A079234 A051235

Adjacent sequences: A146201 A146202 A146203 * A146205 A146206 A146207

Keyword

nonn

Author

R. H. Hardin Apr 14 2009

Status

approved