Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,1,1,...) in the main and subdiagonals and (1,2,3,...) in the subsubdiagonal.
A140733
Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,1,1,...) in the main and subdiagonals and (1,2,3,...) in the subsubdiagonal.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =3a(8) =3a(9) =1a(10) =3a(11) =6a(12) =10a(13) =15a(14) =15a(15) =15a(16) =1a(17) =4a(18) =10a(19) =22a(20) =43a(21) =70a(22) =105a(23) =105a(24) =105a(25) =1a(26) =5a(27) =15a(28) =40a(29) =95
External references
- oeis: A140733