Triangle T(n, k) read by rows; given by [1, 1, 1, 1, 1, 1, 1, 1, ...] DELTA [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where DELTA is Deléham's operator defined in A084938.
A085853
Triangle T(n, k) read by rows; given by [1, 1, 1, 1, 1, 1, 1, 1, ...] DELTA [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where DELTA is Deléham's operator defined in A084938.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =5a(7) =11a(8) =7a(9) =1a(10) =14a(11) =42a(12) =42a(13) =15a(14) =1a(15) =42a(16) =162a(17) =227a(18) =137a(19) =31a(20) =1a(21) =132a(22) =627a(23) =1145a(24) =996a(25) =408a(26) =63a(27) =1a(28) =429a(29) =2432
External references
- oeis: A085853