A163594 - cp's OEIS frontend

A163594 a(n+1) equals the coefficient of x^n in the 2^(n-1)-th iteration of g.f. A(x) = Sum_{m>=1} a(m)*x^m for n>=1 with a(1)=1.

n	a(n)
1	1
2	1
3	2
4	20
5	804
6	108304
7	49833296
8	87606851264
9	641794234287360
10	19783636266156204928
11	2512584289692759254055168
12	1295158553795409705964052724736
13	2690610592205668589191756477437574144

[1, 1, 2, 20, 804, 108304, 49833296, 87606851264, 641794234287360, 19783636266156204928, 2512584289692759254055168, 1295158553795409705964052724736, 2690610592205668589191756477437574144]

cp's OEIS Frontend

A163594 a(n+1) equals the coefficient of x^n in the 2^(n-1)-th iteration of g.f. A(x) = Sum_{m>=1} a(m)*x^m for n>=1 with a(1)=1.

Table of values

List of values