A144861 - cp's OEIS frontend

A144861 Primitive prime factors of the sequence 2k^2 - 1 in the order in which they are first found.

n	a(n)
2	7
3	17
4	31
5	71
6	97
7	127
8	23
9	199
10	241
11	41
12	337
13	449
14	73
15	577
16	647
17	103
18	47
19	881
20	967
21	151
22	1151
23	1249
24	193
25	1567
26	257
27	113
28	89
29	311
30	2311
31	79
32	2591
33	2887
34	3041
35	457
36	3361
37	3527
38	3697
39	4049
40	4231
41	631
42	271
43	4801
44	4999
45	743
46	5407
47	137
48	263
49	6271
50	6961
51	313
52	1063

[7, 17, 31, 71, 97, 127, 23, 199, 241, 41, 337, 449, 73, 577, 647, 103, 47, 881, 967, 151, 1151, 1249, 193, 1567, 257, 113, 89, 311, 2311, 79, 2591, 2887, 3041, 457, 3361, 3527, 3697, 4049, 4231, 631, 271, 4801, 4999, 743, 5407, 137, 263, 6271, 6961, 313, 1063]

cp's OEIS Frontend

A144861 Primitive prime factors of the sequence 2k^2 - 1 in the order in which they are first found.

Table of values

List of values