Reduced denominators of A179420(n)/n!, where e.g.f. A(x) = Sum_{n>=0} A179420(n)/n! satisfies: A(A(x)) = x*A'(x) with A(0)=0, A'(0)=1.

A221020

Reduced denominators of A179420(n)/n!, where e.g.f. A(x) = Sum_{n>=0} A179420(n)/n! satisfies: A(A(x)) = x*A'(x) with A(0)=0, A'(0)=1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =5a(7) =360a(8) =420a(9) =56a(10) =756a(11) =75600a(12) =415800a(13) =2494800a(14) =8424a(15) =1223040a(16) =504504000a(17) =9081072000a(18) =5145940800a(19) =111152321280a(20) =754247894400a(22) =430747632000

External references