A336361 - cp's OEIS frontend

A336361 Number of iterations of A000593 (sum of divisors of odd part of n) needed to reach a power of 2, or -1 if never reached.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	1
8	0
9	3
10	2
11	2
12	1
13	2
14	1
15	2
16	0
17	4
18	3
19	3
20	2
21	1
22	2
23	2
24	1
25	2
26	2
27	3
28	1
29	3
30	2
31	1
32	0
33	2
34	4
35	2
36	3
37	4
38	3
39	2
40	2
41	2
42	1
43	3
44	2
45	3
46	2
47	2
48	1
49	4
50	2
51	4
52	2
53	4
54	3
55	4
56	1
57	3
58	3
59	3
60	2
61	2
62	1
63	3
64	0
65	2
66	2
67	5
68	4
69	2
70	2
71	4
72	3
73	5
74	4
75	2
76	3
77	2
78	2
79	3
80	2
81	5
82	2
83	2
84	1
85	4
86	3
87	3
88	2
89	4
90	3
91	2
92	2
93	1
94	2
95	3
96	1
97	5
98	4
99	3
100	2
101	5
102	4
103	3
104	2
105	2

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

cp's OEIS Frontend

A336361 Number of iterations of A000593 (sum of divisors of odd part of n) needed to reach a power of 2, or -1 if never reached.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	1
8	0
9	3
10	2
11	2
12	1
13	2
14	1
15	2
16	0
17	4
18	3
19	3
20	2
21	1
22	2
23	2
24	1
25	2
26	2
27	3
28	1
29	3
30	2
31	1
32	0
33	2
34	4
35	2
36	3
37	4
38	3
39	2
40	2
41	2
42	1
43	3
44	2
45	3
46	2
47	2
48	1
49	4
50	2
51	4
52	2
53	4
54	3
55	4
56	1
57	3
58	3
59	3
60	2
61	2
62	1
63	3
64	0
65	2
66	2
67	5
68	4
69	2
70	2
71	4
72	3
73	5
74	4
75	2
76	3
77	2
78	2
79	3
80	2
81	5
82	2
83	2
84	1
85	4
86	3
87	3
88	2
89	4
90	3
91	2
92	2
93	1
94	2
95	3
96	1
97	5
98	4
99	3
100	2
101	5
102	4
103	3
104	2
105	2

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	1
8	0
9	3
10	2
11	2
12	1
13	2
14	1
15	2
16	0
17	4
18	3
19	3
20	2
21	1
22	2
23	2
24	1
25	2
26	2
27	3
28	1
29	3
30	2
31	1
32	0
33	2
34	4
35	2
36	3
37	4
38	3
39	2
40	2
41	2
42	1
43	3
44	2
45	3
46	2
47	2
48	1
49	4
50	2
51	4
52	2
53	4
54	3
55	4
56	1
57	3
58	3
59	3
60	2
61	2
62	1
63	3
64	0
65	2
66	2
67	5
68	4
69	2
70	2
71	4
72	3
73	5
74	4
75	2
76	3
77	2
78	2
79	3
80	2
81	5
82	2
83	2
84	1
85	4
86	3
87	3
88	2
89	4
90	3
91	2
92	2
93	1
94	2
95	3
96	1
97	5
98	4
99	3
100	2
101	5
102	4
103	3
104	2
105	2

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	1
7	1
8	0
9	3
10	2
11	2
12	1
13	2
14	1
15	2
16	0
17	4
18	3
19	3
20	2
21	1
22	2
23	2
24	1
25	2
26	2
27	3
28	1
29	3
30	2
31	1
32	0
33	2
34	4
35	2
36	3
37	4
38	3
39	2
40	2
41	2
42	1
43	3
44	2
45	3
46	2
47	2
48	1
49	4
50	2
51	4
52	2
53	4
54	3
55	4
56	1
57	3
58	3
59	3
60	2
61	2
62	1
63	3
64	0
65	2
66	2
67	5
68	4
69	2
70	2
71	4
72	3
73	5
74	4
75	2
76	3
77	2
78	2
79	3
80	2
81	5
82	2
83	2
84	1
85	4
86	3
87	3
88	2
89	4
90	3
91	2
92	2
93	1
94	2
95	3
96	1
97	5
98	4
99	3
100	2
101	5
102	4
103	3
104	2
105	2