A179680 - cp's OEIS frontend

A179680 The number of exponents >1 in a recursive reduction of 2n-1 until reaching an odd part equal to 1.

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

[0, 1, 1, 1, 1, 3, 3, 1, 1, 5, 1, 3, 5, 5, 7, 1, 1, 3, 9, 3, 3, 3, 3, 6, 5, 2, 13, 5, 3, 15, 15, 1, 1, 17, 5, 9, 1, 5, 7, 10, 13, 21, 1, 7, 2, 3, 2, 9, 11, 9, 25, 13, 2, 27, 9, 9, 5, 11, 2, 6, 27, 5, 25, 1, 1, 33, 3, 9, 15, 35, 11, 15, 3, 11, 37, 3, 6, 5, 13, 13]

cp's OEIS Frontend

A179680 The number of exponents >1 in a recursive reduction of 2n-1 until reaching an odd part equal to 1.

Table of values

List of values

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

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

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