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.

A353221 Squarefree base-2 Fermat pseudoprimes divisible by a Wieferich prime.

Table of values

n a(n)
1 3581761
2 5173169
3 5968873
4 23872213
5 36974341
6 53711113
7 107023281
8 427294141
9 490950461
10 526359289
11 546649741
12 550230409
13 753532781
14 803264281
15 836683849
16 1115578101
17 1168492417
18 1193557093
19 1540454761
20 1632785701
21 2129304997
22 2295209281
23 2677147201

List of values

[3581761, 5173169, 5968873, 23872213, 36974341, 53711113, 107023281, 427294141, 490950461, 526359289, 546649741, 550230409, 753532781, 803264281, 836683849, 1115578101, 1168492417, 1193557093, 1540454761, 1632785701, 2129304997, 2295209281, 2677147201]