A385705 - cp's OEIS frontend

A385705 Primes p such that there exists prime q < p such that sigma(p+1)=sigma(q+1).

n	a(n)
1	37
2	61
3	109
4	139
5	157
6	181
7	193
8	233
9	269
10	283
11	347
12	349
13	353
14	367
15	373
16	379
17	487
18	521
19	541
20	563
21	571
22	593
23	613
24	617
25	619
26	641
27	643
28	709
29	727
30	739
31	797
32	811
33	823
34	829
35	853
36	857
37	877
38	907
39	983
40	991
41	1033
42	1051
43	1097
44	1103
45	1117
46	1193
47	1217
48	1229
49	1231
50	1237

[37, 61, 109, 139, 157, 181, 193, 233, 269, 283, 347, 349, 353, 367, 373, 379, 487, 521, 541, 563, 571, 593, 613, 617, 619, 641, 643, 709, 727, 739, 797, 811, 823, 829, 853, 857, 877, 907, 983, 991, 1033, 1051, 1097, 1103, 1117, 1193, 1217, 1229, 1231, 1237]

cp's OEIS Frontend

A385705 Primes p such that there exists prime q < p such that sigma(p+1)=sigma(q+1).

Table of values

List of values