G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * (4 + A(x^k)) * x^k/k ).
A363510
G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * (4 + A(x^k)) * x^k/k ).
Terms
- a(0) =1a(1) =5a(2) =15a(3) =50a(4) =190a(5) =766a(6) =3231a(7) =14066a(8) =62681a(9) =284591a(10) =1311622a(11) =6120183a(12) =28855529a(13) =137257541a(14) =657894518a(15) =3174411715a(16) =15406640415a(17) =75162477018a(18) =368383443235
External references
- oeis: A363510