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

A156484

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

Terms

    a(0) =2a(1) =12a(2) =228a(3) =4884a(4) =575670a(5) =230597508a(6) =199962700756

External references