A193070 - cp's OEIS frontend

A193070 Odd numbers N for which sigma(N^2) is prime.

n	a(n)
1	3
2	5
3	17
4	27
5	41
6	49
7	59
8	71
9	89
10	101
11	125
12	131
13	167
14	169
15	173
16	289
17	293
18	383
19	529
20	677
21	701
22	729
23	743
24	761
25	773
26	827
27	839
28	841
29	857
30	911
31	1091
32	1097
33	1163
34	1181
35	1193
36	1217
37	1373
38	1427
39	1487
40	1559
41	1583
42	1709
43	1811
44	1847
45	1849
46	1931
47	1973
48	2129
49	2197
50	2273
51	2309

[3, 5, 17, 27, 41, 49, 59, 71, 89, 101, 125, 131, 167, 169, 173, 289, 293, 383, 529, 677, 701, 729, 743, 761, 773, 827, 839, 841, 857, 911, 1091, 1097, 1163, 1181, 1193, 1217, 1373, 1427, 1487, 1559, 1583, 1709, 1811, 1847, 1849, 1931, 1973, 2129, 2197, 2273, 2309]

cp's OEIS Frontend

A193070 Odd numbers N for which sigma(N^2) is prime.

Table of values

List of values