Number of -5..5 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)).
A202003
Number of -5..5 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)).
Terms
- a(0) =1a(1) =121a(2) =111a(3) =2467a(4) =14365a(5) =221433a(6) =1519417a(7) =14540551a(8) =130169953a(9) =1459090675a(10) =13589734965a(11) =144206621427
External references
- oeis: A202003