A326826 - cp's OEIS frontend

A326826 a(n) = (1/2) * Sum_{d|n} (sigma_1(d) + sigma_2(d)), where sigma_1 = A000203 and sigma_2 = A001157.

n	a(n)
1	1
2	5
3	8
4	19
5	17
6	43
7	30
8	69
9	60
10	95
11	68
12	176
13	93
14	171
15	166
16	255
17	155
18	342
19	192
20	403
21	303
22	395
23	278
24	681
25	358
26	543
27	490
28	738
29	437
30	961
31	498
32	969
33	709
34	911
35	720
36	1476
37	705
38	1131
39	978
40	1603
41	863
42	1773
43	948
44	1732
45	1440
46	1643
47	1130
48	2634
49	1284
50	2110
51	1648
52	2391
53	1433
54	2882
55	1706

[1, 5, 8, 19, 17, 43, 30, 69, 60, 95, 68, 176, 93, 171, 166, 255, 155, 342, 192, 403, 303, 395, 278, 681, 358, 543, 490, 738, 437, 961, 498, 969, 709, 911, 720, 1476, 705, 1131, 978, 1603, 863, 1773, 948, 1732, 1440, 1643, 1130, 2634, 1284, 2110, 1648, 2391, 1433, 2882, 1706]

cp's OEIS Frontend

A326826 a(n) = (1/2) * Sum_{d|n} (sigma_1(d) + sigma_2(d)), where sigma_1 = A000203 and sigma_2 = A001157.

Table of values

List of values