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A159209 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 9 0
766, 5670, 24734, 79462, 333362, 1099974, 3149650, 11849382, 37740530, 110604070, 412449602, 1358595654, 4244427586 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..15.

CROSSREFS

Sequence in context: A247486 A125109 A234163 * A045142 A115934 A252072

Adjacent sequences:  A159206 A159207 A159208 * A159210 A159211 A159212

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 06 2009

STATUS

approved

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Last modified October 4 18:23 EDT 2022. Contains 357239 sequences. (Running on oeis4.)