490879

Appears in sequences

• Number of -4..4 circular arrays x(0..n+1) of n+2 elements with zero sums of x(i) and x(i)*x((i+1) mod (n+2)).at n=6A202002
• T(n,k)=Number of -k..k circular arrays x(0..n+1) of n+2 elements with zero sums of x(i) and x(i)*x((i+1) mod (n+2)).at n=51A202006
• Number of -n..n circular arrays x(0..8) of 9 elements with zero sums of x(i) and x(i)*x((i+1) mod 9).at n=3A202011