A221020 - cp's OEIS frontend

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.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	6
7	5
8	360
9	420
10	56
11	756
12	75600
13	415800
14	2494800
15	8424
16	1223040
17	504504000
18	9081072000
19	5145940800
20	111152321280
21	754247894400
22	37712394720000
23	430747632000
24	14454741869568
25	319672175961600
26	4080179409546240
27	14011605115200000
28	1653814216454400000

[1, 1, 1, 2, 3, 6, 5, 360, 420, 56, 756, 75600, 415800, 2494800, 8424, 1223040, 504504000, 9081072000, 5145940800, 111152321280, 754247894400, 37712394720000, 430747632000, 14454741869568, 319672175961600, 4080179409546240, 14011605115200000, 1653814216454400000]

cp's OEIS Frontend

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.

Table of values

List of values