A305812 - cp's OEIS frontend

A305812 a(1) = 0; for n > 1, a(n) = Product_{d|n, 1 < d < n} prime(A305788(d)-1).

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	4
7	1
8	6
9	2
10	6
11	1
12	60
13	1
14	4
15	6
16	42
17	1
18	100
19	1
20	198
21	4
22	4
23	1
24	4620
25	3
26	4
27	10
28	60
29	1
30	4620
31	1
32	546
33	4
34	26
35	6
36	56100
37	1
38	4
39	4
40	26334
41	1
42	600
43	1
44	60
45	210
46	10
47	1
48	1381380
49	2
50	132
51	26
52	60
53	1
54	18700
55	6
56	4620
57	4
58	10
59	1
60	66625020
61	1
62	4
63	60
64	15834
65	6
66	1000
67	1
68	2418
69	10
70	3300
71	1
72	334187700
73	1
74	4
75	84
76	60
77	4
78	2200
79	1
80	14036022
81	110
82	4
83	1

[0, 1, 1, 2, 1, 4, 1, 6, 2, 6, 1, 60, 1, 4, 6, 42, 1, 100, 1, 198, 4, 4, 1, 4620, 3, 4, 10, 60, 1, 4620, 1, 546, 4, 26, 6, 56100, 1, 4, 4, 26334, 1, 600, 1, 60, 210, 10, 1, 1381380, 2, 132, 26, 60, 1, 18700, 6, 4620, 4, 10, 1, 66625020, 1, 4, 60, 15834, 6, 1000, 1, 2418, 10, 3300, 1, 334187700, 1, 4, 84, 60, 4, 2200, 1, 14036022, 110, 4, 1]

cp's OEIS Frontend

A305812 a(1) = 0; for n > 1, a(n) = Product_{d|n, 1 < d < n} prime(A305788(d)-1).

Table of values

List of values