Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=1..n where R_n(y) is the n-th row polynomial in y for n>1 with R_1(y)=y.
A187005
Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=1..n where R_n(y) is the n-th row polynomial in y for n>1 with R_1(y)=y.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =6a(9) =8a(10) =1a(11) =4a(12) =12a(13) =29a(14) =50a(15) =1a(16) =5a(17) =20a(18) =69a(19) =202a(20) =436a(21) =1a(22) =6a(23) =30a(24) =134a(25) =538a(26) =1880a(27) =4912a(28) =1a(29) =7
External references
- oeis: A187005