A146320 Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 9 and every element equal to at least one neighbor.

0, 1, 10742, 1562979, 19868428, 116875556, 471829672, 1513833810, 4145705032, 10094479834, 22430185920

Offset

3,3

Links

Table of n, a(n) for n=3..13.

Crossrefs

Sequence in context: A255038 A255031 A256949 * A211607 A258513 A258506

Adjacent sequences: A146317 A146318 A146319 * A146321 A146322 A146323

Keyword

nonn

Author

R. H. Hardin Apr 14 2009

Status

approved