A226460 - cp's OEIS frontend

A226460 Let m! have prime factorization Product (p_j^e_j); a(n) = number of distinct prime factors p_j such that e_j = n has no solution for any m!.

n	a(n)
0	0
1	0
2	1
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	3
12	2
13	2
14	1
15	1
16	1
17	3
18	0
19	1
20	2
21	1
22	0
23	4
24	2
25	1
26	0
27	2
28	1
29	4
30	2
31	2
32	0
33	2
34	0
35	2
36	2
37	3
38	1
39	3
40	1
41	2
42	1
43	3
44	1
45	1
46	0
47	5
48	2
49	0
50	0
51	2
52	2
53	2
54	1
55	3
56	2
57	0
58	1
59	5
60	3
61	3
62	1
63	1
64	2
65	2
66	0
67	2
68	1
69	3
70	0
71	4
72	2
73	3
74	0
75	2
76	1
77	2
78	1
79	4
80	2
81	0
82	0
83	6
84	1
85	1
86	0

[0, 0, 1, 1, 0, 2, 1, 2, 0, 1, 0, 3, 2, 2, 1, 1, 1, 3, 0, 1, 2, 1, 0, 4, 2, 1, 0, 2, 1, 4, 2, 2, 0, 2, 0, 2, 2, 3, 1, 3, 1, 2, 1, 3, 1, 1, 0, 5, 2, 0, 0, 2, 2, 2, 1, 3, 2, 0, 1, 5, 3, 3, 1, 1, 2, 2, 0, 2, 1, 3, 0, 4, 2, 3, 0, 2, 1, 2, 1, 4, 2, 0, 0, 6, 1, 1, 0]

cp's OEIS Frontend

A226460 Let m! have prime factorization Product (p_j^e_j); a(n) = number of distinct prime factors p_j such that e_j = n has no solution for any m!.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	3
12	2
13	2
14	1
15	1
16	1
17	3
18	0
19	1
20	2
21	1
22	0
23	4
24	2
25	1
26	0
27	2
28	1
29	4
30	2
31	2
32	0
33	2
34	0
35	2
36	2
37	3
38	1
39	3
40	1
41	2
42	1
43	3
44	1
45	1
46	0
47	5
48	2
49	0
50	0
51	2
52	2
53	2
54	1
55	3
56	2
57	0
58	1
59	5
60	3
61	3
62	1
63	1
64	2
65	2
66	0
67	2
68	1
69	3
70	0
71	4
72	2
73	3
74	0
75	2
76	1
77	2
78	1
79	4
80	2
81	0
82	0
83	6
84	1
85	1
86	0

n	a(n)
0	0
1	0
2	1
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	3
12	2
13	2
14	1
15	1
16	1
17	3
18	0
19	1
20	2
21	1
22	0
23	4
24	2
25	1
26	0
27	2
28	1
29	4
30	2
31	2
32	0
33	2
34	0
35	2
36	2
37	3
38	1
39	3
40	1
41	2
42	1
43	3
44	1
45	1
46	0
47	5
48	2
49	0
50	0
51	2
52	2
53	2
54	1
55	3
56	2
57	0
58	1
59	5
60	3
61	3
62	1
63	1
64	2
65	2
66	0
67	2
68	1
69	3
70	0
71	4
72	2
73	3
74	0
75	2
76	1
77	2
78	1
79	4
80	2
81	0
82	0
83	6
84	1
85	1
86	0

n	a(n)
0	0
1	0
2	1
3	1
4	0
5	2
6	1
7	2
8	0
9	1
10	0
11	3
12	2
13	2
14	1
15	1
16	1
17	3
18	0
19	1
20	2
21	1
22	0
23	4
24	2
25	1
26	0
27	2
28	1
29	4
30	2
31	2
32	0
33	2
34	0
35	2
36	2
37	3
38	1
39	3
40	1
41	2
42	1
43	3
44	1
45	1
46	0
47	5
48	2
49	0
50	0
51	2
52	2
53	2
54	1
55	3
56	2
57	0
58	1
59	5
60	3
61	3
62	1
63	1
64	2
65	2
66	0
67	2
68	1
69	3
70	0
71	4
72	2
73	3
74	0
75	2
76	1
77	2
78	1
79	4
80	2
81	0
82	0
83	6
84	1
85	1
86	0