130456

Appears in sequences

• Number of 9 X 9 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.at n=6A156399
• Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 6.at n=6A156441
• Numbers k such that k^2 XOR (k+1)^2 is a square, and k^2 XOR (k+2)^2 is also a square, where XOR is the bitwise logical exclusive-or operator.at n=2A224241
• Expansion of 1/(1 - Sum_{j>=1} x^(Sum_{i=1..j} prime(i))).at n=53A282906