A286570 - cp's OEIS frontend

A286570 Compound filter (prime signature of n & gcd(n, sigma(n))): a(n) = P(A046523(n), A009194(n)), where P(n,k) is sequence A000027 used as a pairing function.

n	a(n)
1	1
2	3
3	3
4	10
5	3
6	61
7	3
8	36
9	10
10	27
11	3
12	117
13	3
14	27
15	34
16	136
17	3
18	103
19	3
20	90
21	21
22	27
23	3
24	619
25	10
26	27
27	36
28	753
29	3
30	625
31	3
32	528
33	34
34	27
35	21
36	666
37	3
38	27
39	21
40	552
41	3
42	625
43	3
44	117
45	103
46	27
47	3
48	1323
49	10
50	78
51	34
52	90
53	3
54	430
55	21
56	489
57	21
58	27
59	3
60	2545
61	3
62	27
63	78
64	2080
65	21
66	625
67	3
68	90
69	34
70	495
71	3
72	2773
73	3
74	27
75	78
76	117
77	21
78	625
79	3
80	1224
81	136
82	27
83	3
84	3801
85	21
86	27
87	34
88	375
89	3

[1, 3, 3, 10, 3, 61, 3, 36, 10, 27, 3, 117, 3, 27, 34, 136, 3, 103, 3, 90, 21, 27, 3, 619, 10, 27, 36, 753, 3, 625, 3, 528, 34, 27, 21, 666, 3, 27, 21, 552, 3, 625, 3, 117, 103, 27, 3, 1323, 10, 78, 34, 90, 3, 430, 21, 489, 21, 27, 3, 2545, 3, 27, 78, 2080, 21, 625, 3, 90, 34, 495, 3, 2773, 3, 27, 78, 117, 21, 625, 3, 1224, 136, 27, 3, 3801, 21, 27, 34, 375, 3]

cp's OEIS Frontend

A286570 Compound filter (prime signature of n & gcd(n, sigma(n))): a(n) = P(A046523(n), A009194(n)), where P(n,k) is sequence A000027 used as a pairing function.

Table of values

List of values