A385507 - cp's OEIS frontend

A385507 a(n) = v(1 + F(2n - 1)), where F(x) = (3x + 1)/2^v(3*x + 1), x is any odd natural number, and v(y) is the 2-adic valuation of y.

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

[1, 1, 1, 2, 3, 1, 1, 3, 1, 1, 1, 2, 2, 1, 2, 4, 1, 1, 3, 2, 5, 1, 1, 3, 1, 1, 1, 2, 2, 1, 3, 5, 1, 1, 1, 2, 3, 1, 1, 3, 1, 1, 1, 2, 2, 1, 2, 4, 1, 1, 2, 2, 4, 1, 1, 3, 1, 1, 2, 2, 2, 1, 4, 6, 1, 1, 1, 2, 3, 1, 1, 3, 1, 1, 3, 2, 2, 1, 2, 4]

cp's OEIS Frontend

A385507 a(n) = v(1 + F(2n - 1)), where F(x) = (3x + 1)/2^v(3*x + 1), x is any odd natural number, and v(y) is the 2-adic valuation of y.

Table of values

List of values

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

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

cp's OEIS Frontend

A385507 a(n) = v(1 + F(2*n - 1)), where F(x) = (3*x + 1)/2^v(3*x + 1), x is any odd natural number, and v(y) is the 2-adic valuation of y.

Table of values

List of values

A385507 a(n) = v(1 + F(2n - 1)), where F(x) = (3x + 1)/2^v(3*x + 1), x is any odd natural number, and v(y) is the 2-adic valuation of y.

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