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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A292539 Primes p1 such that p2 = 2p1 + 1 and p3 = p1*p2 - 2 are also primes, so p1*p2*p3 is a Lucas-Carmichael number of the form k^2 - 1.

Table of values

n a(n)
1 3
2 5
3 11
4 29
5 53
6 83
7 173
8 239
9 281
10 359
11 431
12 719
13 761
14 809
15 911
16 1031
17 1103
18 1223
19 1289
20 1451
21 1481
22 1511
23 1559
24 1931
25 2069
26 2339
27 2351
28 2393
29 2693
30 2699
31 2819
32 2969
33 3359
34 3491
35 3539
36 3851
37 4019
38 4211
39 4409
40 5039
41 6113
42 6269
43 6329
44 6491
45 6521
46 6551
47 6581

List of values

[3, 5, 11, 29, 53, 83, 173, 239, 281, 359, 431, 719, 761, 809, 911, 1031, 1103, 1223, 1289, 1451, 1481, 1511, 1559, 1931, 2069, 2339, 2351, 2393, 2693, 2699, 2819, 2969, 3359, 3491, 3539, 3851, 4019, 4211, 4409, 5039, 6113, 6269, 6329, 6491, 6521, 6551, 6581]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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