526443

Appears in sequences

• Number of n X n 0..2 symmetric arrays with every row summing to n.at n=6A213794
• T(n,k)=Number of n X n 0..k symmetric arrays with every row summing to floor(n*k/2).at n=26A213800
• Number of 6 X 6 0..n symmetric arrays with all rows summing to 3*n.at n=2A213804
• Expansion of Product_{n>=1} (1 - x^(5*n))^30/(1 - x^n)^31 in powers of x.at n=5A278558