A305982 - cp's OEIS frontend

A305982 a(n) = Product_{d|n, d prime(A305793(1+d)-1), where A305973(k) records the prime signature of 2k-1.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	8
7	2
8	12
9	4
10	8
11	2
12	48
13	2
14	20
15	8
16	24
17	2
18	32
19	2
20	120
21	20
22	8
23	2
24	288
25	4
26	28
27	8
28	120
29	2
30	320
31	2
32	120
33	8
34	20
35	20
36	576
37	2
38	20
39	28
40	480
41	2
42	320
43	2
44	264
45	32
46	8
47	2
48	4320
49	10
50	200
51	20
52	168
53	2
54	320
55	8
56	1200
57	20
58	8
59	2
60	11520
61	2
62	44
63	80
64	600
65	28
66	704
67	2
68	300
69	8
70	800
71	2
72	6912
73	2
74	44
75	80
76	300
77	20
78	448
79	2
80	31200
81	40
82	8
83	2
84	72000
85	20
86	20
87	8

[1, 2, 2, 4, 2, 8, 2, 12, 4, 8, 2, 48, 2, 20, 8, 24, 2, 32, 2, 120, 20, 8, 2, 288, 4, 28, 8, 120, 2, 320, 2, 120, 8, 20, 20, 576, 2, 20, 28, 480, 2, 320, 2, 264, 32, 8, 2, 4320, 10, 200, 20, 168, 2, 320, 8, 1200, 20, 8, 2, 11520, 2, 44, 80, 600, 28, 704, 2, 300, 8, 800, 2, 6912, 2, 44, 80, 300, 20, 448, 2, 31200, 40, 8, 2, 72000, 20, 20, 8]

cp's OEIS Frontend

A305982 a(n) = Product_{d|n, d prime(A305793(1+d)-1), where A305973(k) records the prime signature of 2k-1.

Table of values

List of values