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.

A020230 Strong pseudoprimes to base 4.

Table of values

n a(n)
1 341
2 1387
3 2047
4 3277
5 4033
6 4371
7 4681
8 5461
9 8321
10 8911
11 10261
12 13747
13 14491
14 15709
15 15841
16 19951
17 29341
18 31621
19 42799
20 49141
21 49981
22 52633
23 60787
24 65077
25 65281
26 74665
27 80581
28 83333
29 85489
30 88357
31 90751
32 104653
33 123251
34 129921
35 130561
36 137149

List of values

[341, 1387, 2047, 3277, 4033, 4371, 4681, 5461, 8321, 8911, 10261, 13747, 14491, 15709, 15841, 19951, 29341, 31621, 42799, 49141, 49981, 52633, 60787, 65077, 65281, 74665, 80581, 83333, 85489, 88357, 90751, 104653, 123251, 129921, 130561, 137149]