Number of -3..3 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
A199699
Number of -3..3 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
Terms
- a(0) =1a(1) =6a(2) =32a(3) =168a(4) =892a(5) =4964a(6) =27854a(7) =156920a(8) =891684a(9) =5095360a(10) =29236016a(11) =168361392a(12) =972601784a(13) =5633548460a(14) =32706291872a(15) =190266981972
External references
- oeis: A199699