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A159358
Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 4
1
21, 10863, 485580, 5524819, 34063605, 147025901, 501203288, 1443386025, 3661046269, 8408644815, 17831404296, 35411163363, 66561697945, 119403667269, 205752113900, 342352218641, 552401782713, 867401681215, 1329378303444
OFFSET
5,1
LINKS
CROSSREFS
Sequence in context: A176446 A135823 A013726 * A048914 A046183 A203674
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 11 2009
STATUS
approved