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A159390 Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 13 1
40, 17290, 10876248, 3744973114, 813350278400, 99052072571820, 6469138147152688, 243231208764113056, 5871649032381652712, 99740686767840133850, 1277236022721642074168, 12978098074693925323078 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

R. H. Hardin, Table of n, a(n) for n=3..23

CROSSREFS

Sequence in context: A279578 A159680 A240628 * A204682 A205158 A205307

Adjacent sequences:  A159387 A159388 A159389 * A159391 A159392 A159393

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 11 2009

STATUS

approved

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Last modified December 6 00:51 EST 2021. Contains 349558 sequences. (Running on oeis4.)