A381958 - cp's OEIS frontend

A381958 Numerator of the sum of the reciprocals of the indices of distinct prime factors of n.

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	3
7	1
8	1
9	1
10	4
11	1
12	3
13	1
14	5
15	5
16	1
17	1
18	3
19	1
20	4
21	3
22	6
23	1
24	3
25	1
26	7
27	1
28	5
29	1
30	11
31	1
32	1
33	7
34	8
35	7
36	3
37	1
38	9
39	2
40	4
41	1
42	7
43	1
44	6
45	5
46	10
47	1
48	3
49	1
50	4
51	9
52	7
53	1
54	3
55	8
56	5
57	5
58	11
59	1
60	11
61	1
62	12
63	3
64	1
65	1
66	17
67	1
68	8
69	11
70	19
71	1
72	3
73	1
74	13
75	5
76	9
77	9
78	5
79	1
80	4
81	1
82	14
83	1
84	7
85	10
86	15
87	3
88	6
89	1
90	11
91	5
92	10
93	13
94	16
95	11

[0, 1, 1, 1, 1, 3, 1, 1, 1, 4, 1, 3, 1, 5, 5, 1, 1, 3, 1, 4, 3, 6, 1, 3, 1, 7, 1, 5, 1, 11, 1, 1, 7, 8, 7, 3, 1, 9, 2, 4, 1, 7, 1, 6, 5, 10, 1, 3, 1, 4, 9, 7, 1, 3, 8, 5, 5, 11, 1, 11, 1, 12, 3, 1, 1, 17, 1, 8, 11, 19, 1, 3, 1, 13, 5, 9, 9, 5, 1, 4, 1, 14, 1, 7, 10, 15, 3, 6, 1, 11, 5, 10, 13, 16, 11]

cp's OEIS Frontend

A381958 Numerator of the sum of the reciprocals of the indices of distinct prime factors of n.

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	3
7	1
8	1
9	1
10	4
11	1
12	3
13	1
14	5
15	5
16	1
17	1
18	3
19	1
20	4
21	3
22	6
23	1
24	3
25	1
26	7
27	1
28	5
29	1
30	11
31	1
32	1
33	7
34	8
35	7
36	3
37	1
38	9
39	2
40	4
41	1
42	7
43	1
44	6
45	5
46	10
47	1
48	3
49	1
50	4
51	9
52	7
53	1
54	3
55	8
56	5
57	5
58	11
59	1
60	11
61	1
62	12
63	3
64	1
65	1
66	17
67	1
68	8
69	11
70	19
71	1
72	3
73	1
74	13
75	5
76	9
77	9
78	5
79	1
80	4
81	1
82	14
83	1
84	7
85	10
86	15
87	3
88	6
89	1
90	11
91	5
92	10
93	13
94	16
95	11

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	3
7	1
8	1
9	1
10	4
11	1
12	3
13	1
14	5
15	5
16	1
17	1
18	3
19	1
20	4
21	3
22	6
23	1
24	3
25	1
26	7
27	1
28	5
29	1
30	11
31	1
32	1
33	7
34	8
35	7
36	3
37	1
38	9
39	2
40	4
41	1
42	7
43	1
44	6
45	5
46	10
47	1
48	3
49	1
50	4
51	9
52	7
53	1
54	3
55	8
56	5
57	5
58	11
59	1
60	11
61	1
62	12
63	3
64	1
65	1
66	17
67	1
68	8
69	11
70	19
71	1
72	3
73	1
74	13
75	5
76	9
77	9
78	5
79	1
80	4
81	1
82	14
83	1
84	7
85	10
86	15
87	3
88	6
89	1
90	11
91	5
92	10
93	13
94	16
95	11

n	a(n)
1	0
2	1
3	1
4	1
5	1
6	3
7	1
8	1
9	1
10	4
11	1
12	3
13	1
14	5
15	5
16	1
17	1
18	3
19	1
20	4
21	3
22	6
23	1
24	3
25	1
26	7
27	1
28	5
29	1
30	11
31	1
32	1
33	7
34	8
35	7
36	3
37	1
38	9
39	2
40	4
41	1
42	7
43	1
44	6
45	5
46	10
47	1
48	3
49	1
50	4
51	9
52	7
53	1
54	3
55	8
56	5
57	5
58	11
59	1
60	11
61	1
62	12
63	3
64	1
65	1
66	17
67	1
68	8
69	11
70	19
71	1
72	3
73	1
74	13
75	5
76	9
77	9
78	5
79	1
80	4
81	1
82	14
83	1
84	7
85	10
86	15
87	3
88	6
89	1
90	11
91	5
92	10
93	13
94	16
95	11