Number of third differences of arrays of length n+3 of numbers in 0..3.
A228255
Number of third differences of arrays of length n+3 of numbers in 0..3.
Terms
- a(0) =25a(1) =319a(2) =2511a(3) =13933a(4) =58911a(5) =242461a(6) =989527a(7) =4017157a(8) =16245775a(9) =65514541a(10) =263652487a(11) =1059392917a(12) =4251920575a(13) =17050729021a(14) =68332056247a(15) =273715645477
External references
- oeis: A228255