A126031 - cp's OEIS frontend

A126031 a(n) is the largest prime < 3*a(n-1) for n > 1, with a(1) = 2.

n	a(n)
1	2
2	5
3	13
4	37
5	109
6	317
7	947
8	2837
9	8501
10	25471
11	76403
12	229199
13	687593
14	2062759
15	6188263
16	18564769
17	55694299
18	167082893
19	501248653
20	1503745949
21	4511237741
22	13533713213
23	40601139629
24	121803418861
25	365410256543
26	1096230769619
27	3288692308841
28	9866076926507
29	29598230779511

[2, 5, 13, 37, 109, 317, 947, 2837, 8501, 25471, 76403, 229199, 687593, 2062759, 6188263, 18564769, 55694299, 167082893, 501248653, 1503745949, 4511237741, 13533713213, 40601139629, 121803418861, 365410256543, 1096230769619, 3288692308841, 9866076926507, 29598230779511]

cp's OEIS Frontend

A126031 a(n) is the largest prime < 3*a(n-1) for n > 1, with a(1) = 2.

Table of values

List of values