A159391 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 13

80, 84282, 159765632, 135205866466, 61078116529728

Offset

4,1

Links

Table of n, a(n) for n=4..8.

Crossrefs

Sequence in context: A068273 A068285 A159408 * A323448 A231036 A051184

Adjacent sequences: A159388 A159389 A159390 * A159392 A159393 A159394

Keyword

nonn

Author

R. H. Hardin Apr 11 2009

Status

approved