Expansion of (A(x)-1)/(x*A(x)), A(x) the g.f. of A004211.
A171151
Expansion of (A(x)-1)/(x*A(x)), A(x) the g.f. of A004211.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =26a(4) =142a(5) =898a(6) =6342a(7) =49114a(8) =412046a(9) =3711746a(10) =35660166a(11) =363484058a(12) =3914162830a(13) =44370673282a(14) =527868672582
External references
- oeis: A171151