A380312 - cp's OEIS frontend

A380312 Primes not reaching 3 under iterations of p -> gpf(2*p-1).

n	a(n)
1	19
2	29
3	37
4	67
5	73
6	101
7	131
8	167
9	181
10	197
11	211
12	241
13	251
14	257
15	317
16	389
17	421
18	463
19	479
20	503
21	523
22	599
23	643
24	653
25	691
26	719
27	739
28	811
29	827
30	859
31	887
32	907
33	919
34	941
35	983
36	1039
37	1061
38	1069
39	1109
40	1117
41	1217
42	1277
43	1283
44	1289
45	1307
46	1361
47	1381
48	1427
49	1429
50	1499

[19, 29, 37, 67, 73, 101, 131, 167, 181, 197, 211, 241, 251, 257, 317, 389, 421, 463, 479, 503, 523, 599, 643, 653, 691, 719, 739, 811, 827, 859, 887, 907, 919, 941, 983, 1039, 1061, 1069, 1109, 1117, 1217, 1277, 1283, 1289, 1307, 1361, 1381, 1427, 1429, 1499]

cp's OEIS Frontend

A380312 Primes not reaching 3 under iterations of p -> gpf(2*p-1).

Table of values

List of values