Triangle, read by rows, that transforms rows into diagonals in the table of coefficients of successive iterations of x+x^2 (cf. A122888).
A166900
Triangle, read by rows, that transforms rows into diagonals in the table of coefficients of successive iterations of x+x^2 (cf. A122888).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =1a(6) =9a(7) =21a(8) =9a(9) =1a(10) =64a(11) =156a(12) =84a(13) =16a(14) =1a(15) =630a(16) =1540a(17) =935a(18) =230a(19) =25a(20) =1a(21) =7916a(22) =19160a(23) =12480a(24) =3564a(25) =510a(26) =36a(27) =1a(28) =121023a(29) =288813
External references
- oeis: A166900