A159220 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 18

4656, 48248, 254088, 939936, 4708356, 18184688, 61848084, 284320904, 1123134900, 4166675112

Offset

3,1

Links

Table of n, a(n) for n=3..12.

Crossrefs

Sequence in context: A118815 A235183 A069646 * A020422 A048131 A062626

Adjacent sequences: A159217 A159218 A159219 * A159221 A159222 A159223

Keyword

nonn

Author

R. H. Hardin Apr 06 2009

Status

approved