Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 11.

A156453

Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 11.

Terms

    a(0) =4a(1) =42a(2) =704a(3) =37760a(4) =5291400a(5) =1392368488a(6) =570443632816

External references