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A159220 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 18 0
4656, 48248, 254088, 939936, 4708356, 18184688, 61848084, 284320904, 1123134900, 4166675112 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
CROSSREFS
Sequence in context: A118815 A235183 A069646 * A020422 A048131 A062626
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 06 2009
STATUS
approved

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Last modified May 17 19:53 EDT 2024. Contains 372607 sequences. (Running on oeis4.)