A146497 - OEIS

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A146497

Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 13 and every element equal to at least one neighbor.

1

0, 20, 17226, 8194791, 1995724092, 51267367432

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OFFSET

3,2

LINKS

Table of n, a(n) for n=3..8.

CROSSREFS

Sequence in context: A167060 A172661 A172758 * A348144 A060618 A369948

Adjacent sequences: A146494 A146495 A146496 * A146498 A146499 A146500

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 14 2009

STATUS

approved