A159201 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 4

135, 767, 3223, 10863, 41455, 133967, 386559, 1297583, 3874159, 10725327, 34367791, 100153391, 275262975, 866491247, 2509423663, 6914468943

Offset

3,1

Links

Table of n, a(n) for n=3..18.

Crossrefs

Sequence in context: A215173 A225360 A328651 * A362400 A211680 A212610

Adjacent sequences: A159198 A159199 A159200 * A159202 A159203 A159204

Keyword

nonn

Author

R. H. Hardin Apr 06 2009

Status

approved