A065018 - cp's OEIS frontend

A065018 a(n) = Sum_{d|n} sigma(d)^2.

n	a(n)
1	1
2	10
3	17
4	59
5	37
6	170
7	65
8	284
9	186
10	370
11	145
12	1003
13	197
14	650
15	629
16	1245
17	325
18	1860
19	401
20	2183
21	1105
22	1450
23	577
24	4828
25	998
26	1970
27	1786
28	3835
29	901
30	6290
31	1025
32	5214
33	2465
34	3250
35	2405
36	10974
37	1445
38	4010
39	3349
40	10508
41	1765
42	11050
43	1937
44	8555
45	6882

[1, 10, 17, 59, 37, 170, 65, 284, 186, 370, 145, 1003, 197, 650, 629, 1245, 325, 1860, 401, 2183, 1105, 1450, 577, 4828, 998, 1970, 1786, 3835, 901, 6290, 1025, 5214, 2465, 3250, 2405, 10974, 1445, 4010, 3349, 10508, 1765, 11050, 1937, 8555, 6882]

cp's OEIS Frontend

A065018 a(n) = Sum_{d|n} sigma(d)^2.

Table of values

List of values