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.

A216276 Fermat pseudoprimes to base 2 of the form (p^2 + 2*p)/3, where p is also a Fermat pseudoprime to base 2.

Table of values

n a(n)
1 997633
2 1398101
3 2433601
4 3581761
5 26474581
6 37354465
7 63002501
8 70006021
9 82268033
10 93030145
11 561481921
12 804978721
13 1231726981
14 2602378721
15 2942952481
16 12817618945
17 15516020833
18 16627811905
19 22016333333
20 25862624705
21 53707855201
22 67220090785
23 95074073281
24 144278347201

List of values

[997633, 1398101, 2433601, 3581761, 26474581, 37354465, 63002501, 70006021, 82268033, 93030145, 561481921, 804978721, 1231726981, 2602378721, 2942952481, 12817618945, 15516020833, 16627811905, 22016333333, 25862624705, 53707855201, 67220090785, 95074073281, 144278347201]