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A159408 Number of nXn arrays of squares of integers with every (n-1)X(n-1) subblock summing to 21 1
80, 81970, 198598120, 364613564592, 491411402965408, 433784038380001756, 230474677737192144368, 70203649179688320074704, 12227440515845132316709008, 1273365210975360016227907628 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

R. H. Hardin, Table of n, a(n) for n=3..16

CROSSREFS

Sequence in context: A183582 A068273 A068285 * A159391 A231036 A051184

Adjacent sequences:  A159405 A159406 A159407 * A159409 A159410 A159411

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2009

STATUS

approved

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Last modified October 31 08:50 EDT 2014. Contains 248861 sequences.