A381887 - cp's OEIS frontend

A381887 a(n) = 1 if n != p^m(p-1) for any prime p and any m >= 0, otherwise Product_{p in W} p, where W are the primes such that n = p^m(p-1) for some m >= 0.

n	a(n)
1	2
2	6
3	1
4	10
5	1
6	21
7	1
8	2
9	1
10	11
11	1
12	13
13	1
14	1
15	1
16	34
17	1
18	57
19	1
20	5
21	1
22	23
23	1
24	1
25	1
26	1
27	1
28	29
29	1
30	31
31	1
32	2
33	1
34	1
35	1
36	37
37	1
38	1
39	1
40	41
41	1
42	301
43	1
44	1
45	1
46	47
47	1
48	1
49	1
50	1
51	1
52	53
53	1
54	3
55	1
56	1
57	1
58	59
59	1
60	61
61	1
62	1
63	1
64	2
65	1
66	67
67	1
68	1
69	1
70	71
71	1
72	73
73	1
74	1
75	1
76	1
77	1
78	79
79	1

[2, 6, 1, 10, 1, 21, 1, 2, 1, 11, 1, 13, 1, 1, 1, 34, 1, 57, 1, 5, 1, 23, 1, 1, 1, 1, 1, 29, 1, 31, 1, 2, 1, 1, 1, 37, 1, 1, 1, 41, 1, 301, 1, 1, 1, 47, 1, 1, 1, 1, 1, 53, 1, 3, 1, 1, 1, 59, 1, 61, 1, 1, 1, 2, 1, 67, 1, 1, 1, 71, 1, 73, 1, 1, 1, 1, 1, 79, 1]

cp's OEIS Frontend

A381887 a(n) = 1 if n != p^m(p-1) for any prime p and any m >= 0, otherwise Product_{p in W} p, where W are the primes such that n = p^m(p-1) for some m >= 0.

Table of values

List of values

n	a(n)
1	2
2	6
3	1
4	10
5	1
6	21
7	1
8	2
9	1
10	11
11	1
12	13
13	1
14	1
15	1
16	34
17	1
18	57
19	1
20	5
21	1
22	23
23	1
24	1
25	1
26	1
27	1
28	29
29	1
30	31
31	1
32	2
33	1
34	1
35	1
36	37
37	1
38	1
39	1
40	41
41	1
42	301
43	1
44	1
45	1
46	47
47	1
48	1
49	1
50	1
51	1
52	53
53	1
54	3
55	1
56	1
57	1
58	59
59	1
60	61
61	1
62	1
63	1
64	2
65	1
66	67
67	1
68	1
69	1
70	71
71	1
72	73
73	1
74	1
75	1
76	1
77	1
78	79
79	1

n	a(n)
1	2
2	6
3	1
4	10
5	1
6	21
7	1
8	2
9	1
10	11
11	1
12	13
13	1
14	1
15	1
16	34
17	1
18	57
19	1
20	5
21	1
22	23
23	1
24	1
25	1
26	1
27	1
28	29
29	1
30	31
31	1
32	2
33	1
34	1
35	1
36	37
37	1
38	1
39	1
40	41
41	1
42	301
43	1
44	1
45	1
46	47
47	1
48	1
49	1
50	1
51	1
52	53
53	1
54	3
55	1
56	1
57	1
58	59
59	1
60	61
61	1
62	1
63	1
64	2
65	1
66	67
67	1
68	1
69	1
70	71
71	1
72	73
73	1
74	1
75	1
76	1
77	1
78	79
79	1

cp's OEIS Frontend

A381887 a(n) = 1 if n != p^m*(p-1) for any prime p and any m >= 0, otherwise Product_{p in W} p, where W are the primes such that n = p^m*(p-1) for some m >= 0.

Table of values

List of values

A381887 a(n) = 1 if n != p^m(p-1) for any prime p and any m >= 0, otherwise Product_{p in W} p, where W are the primes such that n = p^m(p-1) for some m >= 0.

n	a(n)
1	2
2	6
3	1
4	10
5	1
6	21
7	1
8	2
9	1
10	11
11	1
12	13
13	1
14	1
15	1
16	34
17	1
18	57
19	1
20	5
21	1
22	23
23	1
24	1
25	1
26	1
27	1
28	29
29	1
30	31
31	1
32	2
33	1
34	1
35	1
36	37
37	1
38	1
39	1
40	41
41	1
42	301
43	1
44	1
45	1
46	47
47	1
48	1
49	1
50	1
51	1
52	53
53	1
54	3
55	1
56	1
57	1
58	59
59	1
60	61
61	1
62	1
63	1
64	2
65	1
66	67
67	1
68	1
69	1
70	71
71	1
72	73
73	1
74	1
75	1
76	1
77	1
78	79
79	1