G.f. satisfies: A(x) = P(x*A(x)^2) where A(x/P(x)^2) = P(x) is the g.f. for Partition numbers (A000041).

A171802

G.f. satisfies: A(x) = P(x*A(x)^2) where A(x/P(x)^2) = P(x) is the g.f. for Partition numbers (A000041).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =20a(4) =115a(5) =714a(6) =4669a(7) =31671a(8) =220800a(9) =1572395a(10) =11389059a(11) =83642650a(12) =621400794a(13) =4661706035a(14) =35264616260a(15) =268700873765

External references