Number of -5..5 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
A199701
Number of -5..5 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
Terms
- a(0) =1a(1) =10a(2) =82a(3) =724a(4) =6504a(5) =59992a(6) =559028a(7) =5252900a(8) =49700882a(9) =472873888a(10) =4519281222a(11) =43353372676a(12) =417214414596
External references
- oeis: A199701