A140853 - cp's OEIS frontend

A140853 a(n) = prime(prime(n) - 1) - 1, where prime(n) is the n-th prime.

n	a(n)
1	1
2	2
3	6
4	12
5	28
6	36
7	52
8	60
9	78
10	106
11	112
12	150
13	172
14	180
15	198
16	238
17	270
18	280
19	316
20	348
21	358
22	396
23	420
24	456
25	502
26	540
27	556
28	576
29	592
30	612
31	700
32	732
33	768
34	786
35	856
36	862
37	910
38	952
39	982
40	1020
41	1060
42	1068
43	1150
44	1162
45	1192
46	1212
47	1290
48	1398
49	1428
50	1438
51	1458

[1, 2, 6, 12, 28, 36, 52, 60, 78, 106, 112, 150, 172, 180, 198, 238, 270, 280, 316, 348, 358, 396, 420, 456, 502, 540, 556, 576, 592, 612, 700, 732, 768, 786, 856, 862, 910, 952, 982, 1020, 1060, 1068, 1150, 1162, 1192, 1212, 1290, 1398, 1428, 1438, 1458]

cp's OEIS Frontend

A140853 a(n) = prime(prime(n) - 1) - 1, where prime(n) is the n-th prime.

Table of values

List of values