Number of -3..3 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)).
A202001
Number of -3..3 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) =49a(2) =61a(3) =601a(4) =2605a(5) =22865a(6) =101395a(7) =657871a(8) =3603821a(9) =25726609a(10) =150646627a(11) =1027976993a(12) =6463089721a(13) =43715824593a(14) =278513680357
External references
- oeis: A202001