A371908 - cp's OEIS frontend

A371908 a(n) = 2-adic valuation of A008336(2*n).

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

[0, 1, 3, 2, 5, 4, 2, 1, 5, 4, 2, 1, 4, 3, 1, 0, 5, 4, 2, 1, 4, 3, 1, 0, 4, 3, 1, 0, 3, 2, 0, 1, 7, 6, 4, 3, 0, 1, 3, 2, 6, 5, 3, 2, 5, 4, 2, 1, 6, 5, 3, 4, 1, 0, 2, 1, 5, 4, 2, 1, 4, 3, 1, 0, 7, 6, 4, 3, 0, 1, 3, 2, 6, 5, 3, 2, 5, 4, 2, 1, 6, 5, 3, 2, 5, 4, 2]

cp's OEIS Frontend

A371908 a(n) = 2-adic valuation of A008336(2*n).

Table of values

List of values

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

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

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