Triangle T(n,k), 0 <= k <= n, given by (0, 1, 0, 2, 0, 3, 0, 4, 0, 5, ...) DELTA (1, 2, 3, 4, 5, 6, 7, 8, 9, ...) where DELTA is the operator defined in A084938.
A211608
Triangle T(n,k), 0 <= k <= n, given by (0, 1, 0, 2, 0, 3, 0, 4, 0, 5, ...) DELTA (1, 2, 3, 4, 5, 6, 7, 8, 9, ...) where DELTA is the operator defined in A084938.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =3a(6) =0a(7) =1a(8) =9a(9) =15a(10) =0a(11) =1a(12) =21a(13) =90a(14) =105a(15) =0a(16) =1a(17) =45a(18) =375a(19) =1050a(20) =945a(21) =0a(22) =1a(23) =93a(24) =1350a(25) =6825a(26) =14175a(27) =10395a(28) =0a(29) =1
External references
- oeis: A211608