G.f.: 1 = ...(((1/(1-x) - a(1)*0!*x )^2 - a(2)*1!*x^2 )^3 - a(3)*2!*x^3 )^4 - a(4)*3!*x^4 )^5 -..., an infinite series of nested powers.

A274964

G.f.: 1 = ...(((1/(1-x) - a(1)*0!*x )^2 - a(2)*1!*x^2 )^3 - a(3)*2!*x^3 )^4 - a(4)*3!*x^4 )^5 -..., an infinite series of nested powers.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =10a(5) =27a(6) =63a(7) =290a(8) =732a(9) =3950a(10) =14773a(11) =119427a(12) =492167a(13) =4739742a(14) =29304550a(15) =503805954a(16) =2394731095a(17) =33364109691a(18) =267779096008

External references