A146320 - OEIS

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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.

1

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

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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