Rectangular table, read by antidiagonals, where the g.f. of row n is Sum_{i>=0} F_i(x)^n / 2^(i+1), where F_0(x)=x, F_{n+1}(x) = F_n(x+x^2), for n>=1.
A122941
Rectangular table, read by antidiagonals, where the g.f. of row n is Sum_{i>=0} F_i(x)^n / 2^(i+1), where F_0(x)=x, F_{n+1}(x) = F_n(x+x^2), for n>=1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =7a(9) =7a(10) =1a(11) =4a(12) =15a(13) =34a(14) =34a(15) =1a(16) =5a(17) =26a(18) =94a(19) =214a(20) =214a(21) =1a(22) =6a(23) =40a(24) =200a(25) =726a(26) =1652a(27) =1652a(28) =1a(29) =7
External references
- oeis: A122941