Number of -4..4 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
A199700
Number of -4..4 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
Terms
- a(0) =1a(1) =8a(2) =52a(3) =380a(4) =2734a(5) =20116a(6) =149942a(7) =1128388a(8) =8545180a(9) =65055556a(10) =497505902a(11) =3818857188a(12) =29405977172a(13) =227044808964
External references
- oeis: A199700