A318450 - cp's OEIS frontend

A318450 Denominators of the sequence whose Dirichlet convolution with itself yields A001511, the 2-adic valuation of 2n.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	1
9	8
10	2
11	2
12	2
13	2
14	2
15	4
16	1
17	2
18	8
19	2
20	2
21	4
22	2
23	2
24	2
25	8
26	2
27	16
28	2
29	2
30	4
31	2
32	1
33	4
34	2
35	4
36	8
37	2
38	2
39	4
40	2
41	2
42	4
43	2
44	2
45	16
46	2
47	2
48	2
49	8
50	8
51	4
52	2
53	2
54	16
55	4
56	2
57	4
58	2
59	2
60	4
61	2
62	2
63	16
64	1
65	4
66	4
67	2
68	2
69	4
70	4
71	2
72	8
73	2
74	2
75	16
76	2
77	4
78	4
79	2
80	2
81	128
82	2
83	2
84	4
85	4
86	2
87	4
88	2
89	2
90	16
91	4
92	2
93	4
94	2
95	4
96	2
97	2
98	8
99	16
100	8
101	2
102	4
103	2
104	2
105	8

[1, 1, 2, 1, 2, 2, 2, 1, 8, 2, 2, 2, 2, 2, 4, 1, 2, 8, 2, 2, 4, 2, 2, 2, 8, 2, 16, 2, 2, 4, 2, 1, 4, 2, 4, 8, 2, 2, 4, 2, 2, 4, 2, 2, 16, 2, 2, 2, 8, 8, 4, 2, 2, 16, 4, 2, 4, 2, 2, 4, 2, 2, 16, 1, 4, 4, 2, 2, 4, 4, 2, 8, 2, 2, 16, 2, 4, 4, 2, 2, 128, 2, 2, 4, 4, 2, 4, 2, 2, 16, 4, 2, 4, 2, 4, 2, 2, 8, 16, 8, 2, 4, 2, 2, 8]

cp's OEIS Frontend

A318450 Denominators of the sequence whose Dirichlet convolution with itself yields A001511, the 2-adic valuation of 2n.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	1
9	8
10	2
11	2
12	2
13	2
14	2
15	4
16	1
17	2
18	8
19	2
20	2
21	4
22	2
23	2
24	2
25	8
26	2
27	16
28	2
29	2
30	4
31	2
32	1
33	4
34	2
35	4
36	8
37	2
38	2
39	4
40	2
41	2
42	4
43	2
44	2
45	16
46	2
47	2
48	2
49	8
50	8
51	4
52	2
53	2
54	16
55	4
56	2
57	4
58	2
59	2
60	4
61	2
62	2
63	16
64	1
65	4
66	4
67	2
68	2
69	4
70	4
71	2
72	8
73	2
74	2
75	16
76	2
77	4
78	4
79	2
80	2
81	128
82	2
83	2
84	4
85	4
86	2
87	4
88	2
89	2
90	16
91	4
92	2
93	4
94	2
95	4
96	2
97	2
98	8
99	16
100	8
101	2
102	4
103	2
104	2
105	8

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	1
9	8
10	2
11	2
12	2
13	2
14	2
15	4
16	1
17	2
18	8
19	2
20	2
21	4
22	2
23	2
24	2
25	8
26	2
27	16
28	2
29	2
30	4
31	2
32	1
33	4
34	2
35	4
36	8
37	2
38	2
39	4
40	2
41	2
42	4
43	2
44	2
45	16
46	2
47	2
48	2
49	8
50	8
51	4
52	2
53	2
54	16
55	4
56	2
57	4
58	2
59	2
60	4
61	2
62	2
63	16
64	1
65	4
66	4
67	2
68	2
69	4
70	4
71	2
72	8
73	2
74	2
75	16
76	2
77	4
78	4
79	2
80	2
81	128
82	2
83	2
84	4
85	4
86	2
87	4
88	2
89	2
90	16
91	4
92	2
93	4
94	2
95	4
96	2
97	2
98	8
99	16
100	8
101	2
102	4
103	2
104	2
105	8

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	2
7	2
8	1
9	8
10	2
11	2
12	2
13	2
14	2
15	4
16	1
17	2
18	8
19	2
20	2
21	4
22	2
23	2
24	2
25	8
26	2
27	16
28	2
29	2
30	4
31	2
32	1
33	4
34	2
35	4
36	8
37	2
38	2
39	4
40	2
41	2
42	4
43	2
44	2
45	16
46	2
47	2
48	2
49	8
50	8
51	4
52	2
53	2
54	16
55	4
56	2
57	4
58	2
59	2
60	4
61	2
62	2
63	16
64	1
65	4
66	4
67	2
68	2
69	4
70	4
71	2
72	8
73	2
74	2
75	16
76	2
77	4
78	4
79	2
80	2
81	128
82	2
83	2
84	4
85	4
86	2
87	4
88	2
89	2
90	16
91	4
92	2
93	4
94	2
95	4
96	2
97	2
98	8
99	16
100	8
101	2
102	4
103	2
104	2
105	8