Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,1,1,...) in the main and subsubdiagonals and (1,2,3,...) in the subdiagonal.
A140734
Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,1,1,...) in the main and subsubdiagonals and (1,2,3,...) in the subdiagonal.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =4a(7) =4a(8) =1a(9) =1a(10) =3a(11) =9a(12) =18a(13) =21a(14) =9a(15) =1a(16) =1a(17) =4a(18) =16a(19) =48a(20) =102a(21) =132a(22) =76a(23) =16a(24) =1a(25) =1a(26) =5a(27) =25a(28) =100a(29) =310
External references
- oeis: A140734