A066772 - cp's OEIS frontend

A066772 Continued fraction expansion for Sum_{k>=1} d(k)/2^k where d(k) are divisors of k, 1 <= d <= k.

n	a(n)
0	2
1	1
2	2
3	1
4	9
5	1
6	2
7	1
8	1
9	1
10	5
11	8
12	1
13	3
14	2
15	3
16	2
17	2
18	2
19	2
20	1
21	3
22	3
23	4
24	12
25	1
26	1
27	1
28	11
29	4
30	15
31	6
32	3
33	3
34	2
35	1
36	20
37	4
38	4
39	1
40	4
41	1
42	2
43	1
44	2
45	6
46	1
47	2
48	1
49	28
50	107
51	1
52	4
53	4
54	3
55	1
56	2
57	2
58	4
59	2
60	3
61	51
62	1
63	1
64	1
65	4
66	2
67	4
68	1
69	20
70	20
71	1
72	14
73	3
74	27
75	1
76	4
77	3
78	14
79	329
80	1
81	1
82	1
83	111
84	2
85	3
86	1
87	2
88	1
89	4
90	1
91	6
92	1
93	4
94	1

[2, 1, 2, 1, 9, 1, 2, 1, 1, 1, 5, 8, 1, 3, 2, 3, 2, 2, 2, 2, 1, 3, 3, 4, 12, 1, 1, 1, 11, 4, 15, 6, 3, 3, 2, 1, 20, 4, 4, 1, 4, 1, 2, 1, 2, 6, 1, 2, 1, 28, 107, 1, 4, 4, 3, 1, 2, 2, 4, 2, 3, 51, 1, 1, 1, 4, 2, 4, 1, 20, 20, 1, 14, 3, 27, 1, 4, 3, 14, 329, 1, 1, 1, 111, 2, 3, 1, 2, 1, 4, 1, 6, 1, 4, 1]

cp's OEIS Frontend

A066772 Continued fraction expansion for Sum_{k>=1} d(k)/2^k where d(k) are divisors of k, 1 <= d <= k.

Table of values

List of values

n	a(n)
0	2
1	1
2	2
3	1
4	9
5	1
6	2
7	1
8	1
9	1
10	5
11	8
12	1
13	3
14	2
15	3
16	2
17	2
18	2
19	2
20	1
21	3
22	3
23	4
24	12
25	1
26	1
27	1
28	11
29	4
30	15
31	6
32	3
33	3
34	2
35	1
36	20
37	4
38	4
39	1
40	4
41	1
42	2
43	1
44	2
45	6
46	1
47	2
48	1
49	28
50	107
51	1
52	4
53	4
54	3
55	1
56	2
57	2
58	4
59	2
60	3
61	51
62	1
63	1
64	1
65	4
66	2
67	4
68	1
69	20
70	20
71	1
72	14
73	3
74	27
75	1
76	4
77	3
78	14
79	329
80	1
81	1
82	1
83	111
84	2
85	3
86	1
87	2
88	1
89	4
90	1
91	6
92	1
93	4
94	1

n	a(n)
0	2
1	1
2	2
3	1
4	9
5	1
6	2
7	1
8	1
9	1
10	5
11	8
12	1
13	3
14	2
15	3
16	2
17	2
18	2
19	2
20	1
21	3
22	3
23	4
24	12
25	1
26	1
27	1
28	11
29	4
30	15
31	6
32	3
33	3
34	2
35	1
36	20
37	4
38	4
39	1
40	4
41	1
42	2
43	1
44	2
45	6
46	1
47	2
48	1
49	28
50	107
51	1
52	4
53	4
54	3
55	1
56	2
57	2
58	4
59	2
60	3
61	51
62	1
63	1
64	1
65	4
66	2
67	4
68	1
69	20
70	20
71	1
72	14
73	3
74	27
75	1
76	4
77	3
78	14
79	329
80	1
81	1
82	1
83	111
84	2
85	3
86	1
87	2
88	1
89	4
90	1
91	6
92	1
93	4
94	1

n	a(n)
0	2
1	1
2	2
3	1
4	9
5	1
6	2
7	1
8	1
9	1
10	5
11	8
12	1
13	3
14	2
15	3
16	2
17	2
18	2
19	2
20	1
21	3
22	3
23	4
24	12
25	1
26	1
27	1
28	11
29	4
30	15
31	6
32	3
33	3
34	2
35	1
36	20
37	4
38	4
39	1
40	4
41	1
42	2
43	1
44	2
45	6
46	1
47	2
48	1
49	28
50	107
51	1
52	4
53	4
54	3
55	1
56	2
57	2
58	4
59	2
60	3
61	51
62	1
63	1
64	1
65	4
66	2
67	4
68	1
69	20
70	20
71	1
72	14
73	3
74	27
75	1
76	4
77	3
78	14
79	329
80	1
81	1
82	1
83	111
84	2
85	3
86	1
87	2
88	1
89	4
90	1
91	6
92	1
93	4
94	1