A368823 - cp's OEIS frontend

A368823 a(1) = 1; for n > 1, a(n) = A055231(a(n-1) * n), where A055231(k) is the powerfree part of k.

n	a(n)
1	1
2	2
3	6
4	3
5	15
6	10
7	70
8	35
9	35
10	14
11	154
12	231
13	3003
14	858
15	1430
16	715
17	12155
18	24310
19	461890
20	46189
21	969969
22	176358
23	4056234
24	676039
25	676039
26	104006
27	104006
28	7429
29	215441
30	6463230
31	200360130
32	100180065
33	367326905
34	43214930
35	60500902
36	30250451
37	1119266687
38	117817546
39	4594884294
40	11487210735

[1, 2, 6, 3, 15, 10, 70, 35, 35, 14, 154, 231, 3003, 858, 1430, 715, 12155, 24310, 461890, 46189, 969969, 176358, 4056234, 676039, 676039, 104006, 104006, 7429, 215441, 6463230, 200360130, 100180065, 367326905, 43214930, 60500902, 30250451, 1119266687, 117817546, 4594884294, 11487210735]

cp's OEIS Frontend

A368823 a(1) = 1; for n > 1, a(n) = A055231(a(n-1) * n), where A055231(k) is the powerfree part of k.

Table of values

List of values