A159358 Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 4

21, 10863, 485580, 5524819, 34063605, 147025901, 501203288, 1443386025, 3661046269, 8408644815, 17831404296, 35411163363, 66561697945, 119403667269, 205752113900, 342352218641, 552401782713, 867401681215, 1329378303444

Offset

5,1

Links

R. H. Hardin, Table of n, a(n) for n=5..25

Crossrefs

Sequence in context: A176446 A135823 A013726 * A048914 A046183 A203674

Adjacent sequences: A159355 A159356 A159357 * A159359 A159360 A159361

Keyword

nonn

Author

R. H. Hardin Apr 11 2009

Status

approved