A335764 - cp's OEIS frontend

A335764 Decimal expansion of Sum_{k>=1} sigma(k)/(k*2^k) where sigma(k) is the sum of divisors of k (A000203).

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

[1, 2, 4, 2, 0, 6, 2, 0, 9, 4, 8, 1, 2, 4, 1, 4, 9, 4, 5, 7, 9, 7, 8, 4, 5, 4, 8, 1, 8, 9, 4, 6, 2, 9, 6, 6, 8, 9, 7, 3, 4, 0, 3, 9, 7, 8, 2, 5, 0, 4, 2, 5, 8, 8, 4, 6, 2, 7, 1, 3, 8, 1, 6, 7, 2, 5, 3, 3, 9, 1, 1, 8, 4, 4, 7, 0, 6, 2, 8, 8, 4, 6, 5, 8, 2, 4, 1]

cp's OEIS Frontend

A335764 Decimal expansion of Sum_{k>=1} sigma(k)/(k*2^k) where sigma(k) is the sum of divisors of k (A000203).

Table of values

List of values

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

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

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