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A156484 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 26. 0
2, 12, 228, 4884, 575670, 230597508, 199962700756, 417970766466976, 3511155032255902644 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

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

CROSSREFS

Sequence in context: A009683 A132879 A101712 * A009272 A013141 A013143

Adjacent sequences:  A156481 A156482 A156483 * A156485 A156486 A156487

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified November 19 00:12 EST 2019. Contains 329310 sequences. (Running on oeis4.)