A116417 - cp's OEIS frontend

A116417 If n = Sum_{m>=1} 2^(m-1) * b(n,m), where each b(n,m) is 0 or 1 and the sum is a finite sum, then a(n) = denominator of Sum_{m>=1} b(n,m)/m.

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

[1, 1, 2, 2, 3, 3, 6, 6, 4, 4, 4, 4, 12, 12, 12, 12, 5, 5, 10, 10, 15, 15, 30, 30, 20, 20, 20, 20, 60, 60, 60, 60, 6, 6, 3, 3, 2, 2, 1, 1, 12, 12, 12, 12, 4, 4, 4, 4, 30, 30, 15, 15, 10, 10, 5, 5, 60, 60, 60, 60, 20, 20, 20, 20, 7, 7, 14, 14, 21, 21, 42, 42, 28, 28, 28, 28, 84, 84, 84, 84]

cp's OEIS Frontend

A116417 If n = Sum_{m>=1} 2^(m-1) * b(n,m), where each b(n,m) is 0 or 1 and the sum is a finite sum, then a(n) = denominator of Sum_{m>=1} b(n,m)/m.

Table of values

List of values

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

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

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