A159206 Number of n X n arrays of squares of integers with every 3X3 subblock summing to 6

336, 2060, 7528, 19812, 70576, 197564, 465096, 1460108, 3888976, 9235668, 27944512, 75309548, 188132376, 564873500, 1569781408, 4155445092

Offset

3,1

Links

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

Crossrefs

Sequence in context: A348343 A237862 A268807 * A251066 A269050 A184557

Adjacent sequences: A159203 A159204 A159205 * A159207 A159208 A159209

Keyword

nonn

Author

R. H. Hardin Apr 06 2009

Status

approved