A339864 - cp's OEIS frontend

A339864 Primes of the form p + sigma(p-1) for primes p.

n	a(n)
1	3
2	19
3	29
4	41
5	59
6	103
7	131
8	139
9	151
10	149
11	229
12	211
13	269
14	349
15	269
16	389
17	439
18	383
19	523
20	419
21	449
22	727
23	701
24	787
25	569
26	683
27	719
28	659
29	991
30	859
31	811
32	1009
33	887
34	1153
35	877
36	1109
37	1489
38	1489
39	1223
40	1327
41	1657
42	1579
43	1259
44	1693
45	2221
46	1409
47	2011
48	1607
49	1831
50	2251
51	1867
52	2503
53	1801
54	1811
55	2677
56	2689

[3, 19, 29, 41, 59, 103, 131, 139, 151, 149, 229, 211, 269, 349, 269, 389, 439, 383, 523, 419, 449, 727, 701, 787, 569, 683, 719, 659, 991, 859, 811, 1009, 887, 1153, 877, 1109, 1489, 1489, 1223, 1327, 1657, 1579, 1259, 1693, 2221, 1409, 2011, 1607, 1831, 2251, 1867, 2503, 1801, 1811, 2677, 2689]

cp's OEIS Frontend

A339864 Primes of the form p + sigma(p-1) for primes p.

Table of values

List of values