G.f. A(x) satisfies A(x) = 1/((1 - x*A(x)^2) * (1 - x*A(x))).
A379209
G.f. A(x) satisfies A(x) = 1/((1 - x*A(x)^2) * (1 - x*A(x))).
Terms
- a(0) =1a(1) =2a(2) =9a(3) =53a(4) =357a(5) =2605a(6) =20041a(7) =160074a(8) =1314821a(9) =11036015a(10) =94242752a(11) =816190963a(12) =7151741597a(13) =63287390223a(14) =564791911903
External references
- oeis: A379209