A327275 - cp's OEIS frontend

A327275 a(1) = 1; a(n) = Sum_{d|n, d psi(n/d) * a(d), where psi = A001615.

n	a(n)
1	1
2	3
3	4
4	15
5	6
6	36
7	8
8	75
9	28
10	54
11	12
12	252
13	14
14	72
15	72
16	375
17	18
18	348
19	20
20	378
21	96
22	108
23	24
24	1620
25	66
26	126
27	196
28	504
29	30
30	936
31	32
32	1875
33	144
34	162
35	144
36	3108
37	38
38	180
39	168
40	2430
41	42
42	1248
43	44
44	756
45	696
46	216
47	48
48	9900
49	120
50	810
51	216
52	882
53	54
54	3108
55	216
56	3240
57	240
58	270
59	60
60	8568

[1, 3, 4, 15, 6, 36, 8, 75, 28, 54, 12, 252, 14, 72, 72, 375, 18, 348, 20, 378, 96, 108, 24, 1620, 66, 126, 196, 504, 30, 936, 32, 1875, 144, 162, 144, 3108, 38, 180, 168, 2430, 42, 1248, 44, 756, 696, 216, 48, 9900, 120, 810, 216, 882, 54, 3108, 216, 3240, 240, 270, 60, 8568]

cp's OEIS Frontend

A327275 a(1) = 1; a(n) = Sum_{d|n, d psi(n/d) * a(d), where psi = A001615.

Table of values

List of values