Number of integer partitions of n whose second differences sum to 0, meaning either there is only one part, or the first two parts have the same difference as the last two parts.
A360683
Number of integer partitions of n whose second differences sum to 0, meaning either there is only one part, or the first two parts have the same difference as the last two parts.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =4a(6) =8a(7) =6a(8) =11a(9) =12a(10) =17a(11) =14a(12) =32a(13) =23a(14) =40a(15) =44a(16) =64a(17) =59a(18) =104a(19) =93a(20) =149a(21) =157a(22) =218a(23) =227a(24) =342a(25) =349a(26) =481a(27) =538a(28) =713a(29) =777
External references
- oeis: A360683