Number of -2..2 arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous.
A199841
Number of -2..2 arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =23a(4) =66a(5) =192a(6) =575a(7) =1739a(8) =5307a(9) =16304a(10) =50381a(11) =156408a(12) =487398a(13) =1523663a(14) =4776107a(15) =15006513a(16) =47247134a(17) =149023605a(18) =470794024a(19) =1489462276a(20) =4718330397a(21) =14964219411a(22) =47509518289a(23) =150982994162a(24) =480243297965
External references
- oeis: A199841