G.f. satisfies: A(x) = 1 + x*exp( Sum_{n>=1} A226908(n)*A(x^n)*x^n/n ), where A(x) = exp( Sum_{n>=1} A226908(n)*x^n/n ).
A226907
G.f. satisfies: A(x) = 1 + x*exp( Sum_{n>=1} A226908(n)*A(x^n)*x^n/n ), where A(x) = exp( Sum_{n>=1} A226908(n)*x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =20a(7) =48a(8) =113a(9) =276a(10) =677a(11) =1688a(12) =4235a(13) =10750a(14) =27441a(15) =70583a(16) =182540a(17) =474661a(18) =1239813a(19) =3252340a(20) =8563354a(21) =22625355a(22) =59964165a(23) =159379210a(24) =424722489a(25) =1134561965a(26) =3037511482a(27) =8149024111a(28) =21904177974a(29) =58982864413
External references
- oeis: A226907