A050461 - cp's OEIS frontend

A050461 a(n) = Sum_{d|n, n/d=1 mod 4} d^2.

n	a(n)
1	1
2	4
3	9
4	16
5	26
6	36
7	49
8	64
9	82
10	104
11	121
12	144
13	170
14	196
15	234
16	256
17	290
18	328
19	361
20	416
21	442
22	484
23	529
24	576
25	651
26	680
27	738
28	784
29	842
30	936
31	961
32	1024
33	1090
34	1160
35	1274
36	1312
37	1370
38	1444
39	1530
40	1664
41	1682
42	1768
43	1849
44	1936
45	2132
46	2116
47	2209

[1, 4, 9, 16, 26, 36, 49, 64, 82, 104, 121, 144, 170, 196, 234, 256, 290, 328, 361, 416, 442, 484, 529, 576, 651, 680, 738, 784, 842, 936, 961, 1024, 1090, 1160, 1274, 1312, 1370, 1444, 1530, 1664, 1682, 1768, 1849, 1936, 2132, 2116, 2209]

cp's OEIS Frontend

A050461 a(n) = Sum_{d|n, n/d=1 mod 4} d^2.

Table of values

List of values