A156479 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 24.

4, 42, 1104, 151919, 102258544, 204824609668, 788766739361404, 5839894406308561716

Offset

3,1

Links

Table of n, a(n) for n=3..10.

Crossrefs

Sequence in context: A243809 A220180 A134356 * A355130 A355124 A111829

Adjacent sequences: A156476 A156477 A156478 * A156480 A156481 A156482

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved