A163847 - cp's OEIS frontend

A163847 Starting from a(1)=13, a(n+1) is the smallest prime > a(n) such that 2*a(n) - a(n+1) is also prime.

n	a(n)
1	13
2	19
3	31
4	43
5	67
6	73
7	79
8	97
9	127
10	151
11	163
12	199
13	241
14	271
15	313
16	349
17	367
18	397
19	421
20	433
21	457
22	541
23	619
24	631
25	643
26	673
27	727
28	811
29	853
30	877
31	967
32	997
33	1087
34	1123
35	1129
36	1171
37	1213
38	1297
39	1303
40	1327
41	1423
42	1447
43	1471
44	1483
45	1543
46	1597
47	1627
48	1657
49	1693

[13, 19, 31, 43, 67, 73, 79, 97, 127, 151, 163, 199, 241, 271, 313, 349, 367, 397, 421, 433, 457, 541, 619, 631, 643, 673, 727, 811, 853, 877, 967, 997, 1087, 1123, 1129, 1171, 1213, 1297, 1303, 1327, 1423, 1447, 1471, 1483, 1543, 1597, 1627, 1657, 1693]

cp's OEIS Frontend

A163847 Starting from a(1)=13, a(n+1) is the smallest prime > a(n) such that 2*a(n) - a(n+1) is also prime.

Table of values

List of values