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.

A309499 Primes p having a record value of least k such that 4*k^2*p^2 + 1 is prime.

Table of values

n a(n)
1 2
2 11
3 17
4 19
5 283
6 919
7 1093
8 1787
9 9521
10 181243
11 257611
12 274243
13 857419
14 1644871
15 3111607
16 6027277
17 10452083
18 14490703
19 36102991
20 47352131
21 121431767
22 171236887
23 339934099
24 584698243
25 1177972427
26 3008777311
27 3091999399

List of values

[2, 11, 17, 19, 283, 919, 1093, 1787, 9521, 181243, 257611, 274243, 857419, 1644871, 3111607, 6027277, 10452083, 14490703, 36102991, 47352131, 121431767, 171236887, 339934099, 584698243, 1177972427, 3008777311, 3091999399]