A028235 - cp's OEIS frontend

A028235 If n = Product (p_j^k_j), a(n) = numerator of Sum 1/p_j (the denominator of this sum is A007947).

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

[0, 1, 1, 1, 1, 5, 1, 1, 1, 7, 1, 5, 1, 9, 8, 1, 1, 5, 1, 7, 10, 13, 1, 5, 1, 15, 1, 9, 1, 31, 1, 1, 14, 19, 12, 5, 1, 21, 16, 7, 1, 41, 1, 13, 8, 25, 1, 5, 1, 7, 20, 15, 1, 5, 16, 9, 22, 31, 1, 31, 1, 33, 10, 1, 18, 61, 1, 19, 26, 59, 1, 5, 1, 39, 8, 21, 18, 71, 1, 7, 1, 43, 1, 41, 22, 45, 32]

cp's OEIS Frontend

A028235 If n = Product (p_j^k_j), a(n) = numerator of Sum 1/p_j (the denominator of this sum is A007947).

Table of values

List of values

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

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

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