Number of second differences of arrays of length n + 2 of numbers in 0..4.
A228214
Number of second differences of arrays of length n + 2 of numbers in 0..4.
Terms
- a(0) =17a(1) =177a(2) =1429a(3) =9705a(4) =58141a(5) =320481a(6) =1688101a(7) =8717049a(8) =44633821a(9) =227363409a(10) =1153594261a(11) =5835080169a(12) =29443836301a(13) =148292923329a(14) =745759583941
External references
- oeis: A228214