Triangle T(n,k), 0<=k<=n, read by rows, given by (0, 1, 1, 3, 3, 6, 6, 10, 10, 15, ...) DELTA (1, 0, 2, 0, 3, 0, 4, 0, 5, ...) where DELTA is the operator defined in A084938.
A211183
Triangle T(n,k), 0<=k<=n, read by rows, given by (0, 1, 1, 3, 3, 6, 6, 10, 10, 15, ...) DELTA (1, 0, 2, 0, 3, 0, 4, 0, 5, ...) where DELTA is the operator defined in A084938.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =2a(8) =4a(9) =1a(10) =0a(11) =7a(12) =19a(13) =11a(14) =1a(15) =0a(16) =38a(17) =123a(18) =107a(19) =26a(20) =1a(21) =0a(22) =295a(23) =1076a(24) =1195a(25) =474a(26) =57a(27) =1a(28) =0a(29) =3098
External references
- oeis: A211183