Triangle T(n, k) read by rows; given by [1, 0, 0, 0, 0, ...] DELTA [1, 1, 2, 5, 14, 42, 132, 429, 1430, ...] (A000108) where DELTA is Deléham's operator defined in A084938.
A085792
Triangle T(n, k) read by rows; given by [1, 0, 0, 0, 0, ...] DELTA [1, 1, 2, 5, 14, 42, 132, 429, 1430, ...] (A000108) where DELTA is Deléham's operator defined in A084938.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =1a(7) =5a(8) =10a(9) =6a(10) =1a(11) =7a(12) =22a(13) =46a(14) =30a(15) =1a(16) =9a(17) =38a(18) =114a(19) =422a(20) =338a(21) =1a(22) =11a(23) =58a(24) =218a(25) =1002a(26) =12614a(27) =11782a(28) =1a(29) =13
External references
- oeis: A085792