G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A001650(n+1), where A001650 is defined by "n appears n times (n odd).".

A192455

G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A001650(n+1), where A001650 is defined by "n appears n times (n odd).".

Terms

    a(0) =1a(1) =1a(2) =2a(3) =7a(4) =27a(5) =112a(6) =492a(7) =2249a(8) =10580a(9) =50885a(10) =249067a(11) =1236602a(12) =6212563a(13) =31523293a(14) =161317863a(15) =831615320a(16) =4314659345a(17) =22512421092a(18) =118052038100a(19) =621825506334

External references