T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.
A199943
T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.
Terms
- a(0) =2a(1) =4a(2) =2a(3) =6a(4) =12a(5) =2a(6) =8a(7) =30a(8) =36a(9) =2a(10) =10a(11) =56a(12) =142a(13) =104a(14) =2a(15) =12a(16) =90a(17) =376a(18) =660a(19) =302a(20) =2a(21) =14a(22) =132a(23) =778a(24) =2474a(25) =3042a(26) =868a(27) =2a(28) =16a(29) =182
External references
- oeis: A199943