Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,2,3,...) in the main diagonal and (1,1,1,...) in the sub and subsubdiagonals.
A140735
Triangle read by rows, X^n * [1,0,0,0,...]; where X = a tridiagonal matrix with (1,2,3,...) in the main diagonal and (1,1,1,...) in the sub and subsubdiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =5a(7) =2a(8) =1a(9) =1a(10) =7a(11) =19a(12) =16a(13) =12a(14) =3a(15) =1a(16) =1a(17) =15a(18) =65a(19) =90a(20) =95a(21) =46a(22) =22a(23) =4a(24) =1a(25) =1a(26) =31a(27) =211a(28) =440a(29) =630
External references
- oeis: A140735