cp's OEIS Frontend

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.

A237440 Quadruple Hex-primes: let f(n) = A102489(n); then sequence lists primes p such that f(p), f(f(p)). f(f(f(p))) and f(f(f(f(p)))) are also primes.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 61
6 97
7 101
8 257
9 2531
10 4783
11 5683
12 6317
13 8963
14 9463
15 9497
16 11593
17 15683
18 18757
19 23687
20 26251
21 29611
22 31271
23 36011
24 45497
25 45979
26 46853
27 54869
28 73379
29 92557
30 93761
31 104173
32 107857
33 107981
34 121607
35 134047
36 192091
37 196853
38 236729
39 285599
40 310081

List of values

[2, 3, 5, 7, 61, 97, 101, 257, 2531, 4783, 5683, 6317, 8963, 9463, 9497, 11593, 15683, 18757, 23687, 26251, 29611, 31271, 36011, 45497, 45979, 46853, 54869, 73379, 92557, 93761, 104173, 107857, 107981, 121607, 134047, 192091, 196853, 236729, 285599, 310081]