G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A002024(n+1), where A002024 is defined as "n appears n times.".

A193039

G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A002024(n+1), where A002024 is defined as "n appears n times.".

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =13a(6) =34a(7) =91a(8) =251a(9) =709a(10) =2035a(11) =5913a(12) =17366a(13) =51483a(14) =153858a(15) =463001a(16) =1401751a(17) =4266619a(18) =13048709a(19) =40078032a(20) =123570957a(21) =382331356a(22) =1186699353a(23) =3694028136a(24) =11529606672a(25) =36073811897a(26) =113123222246a(27) =355485228001

External references