A156484 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 26.

2, 12, 228, 4884, 575670, 230597508, 199962700756, 417970766466976, 3511155032255902644

Offset

2,1

Links

Table of n, a(n) for n=2..10.

Crossrefs

Sequence in context: A377642 A348332 A101712 * A333447 A347597 A009272

Adjacent sequences: A156481 A156482 A156483 * A156485 A156486 A156487

Keyword

nonn

Author

R. H. Hardin Feb 09 2009

Status

approved