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A159206 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 6 0
336, 2060, 7528, 19812, 70576, 197564, 465096, 1460108, 3888976, 9235668, 27944512, 75309548, 188132376, 564873500, 1569781408, 4155445092 (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: A059467 A237862 A268807 * A251066 A269050 A184557

Adjacent sequences:  A159203 A159204 A159205 * A159207 A159208 A159209

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 06 2009

STATUS

approved

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Last modified October 13 18:57 EDT 2019. Contains 327981 sequences. (Running on oeis4.)