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A159204 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 5 0
198, 1062, 3974, 12294, 45386, 142206, 400914, 1332870, 3945242, 10847070, 34656506, 100733766, 276259698, 868825302, 2514160154, 6922672974 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..18.

CROSSREFS

Sequence in context: A158222 A156771 A065697 * A075457 A224452 A227705

Adjacent sequences:  A159201 A159202 A159203 * A159205 A159206 A159207

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 06 2009

STATUS

approved

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Last modified June 15 20:42 EDT 2019. Contains 324144 sequences. (Running on oeis4.)