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.

A340290 Numbers k that are the representation of primes in base 3 and in base 4.

Table of values

n a(n)
1 2
2 1121
3 2021
4 2111
5 10121
6 10211
7 11201
8 12011
9 12121
10 12211
11 21101
12 21211
13 22111
14 101021
15 101111
16 110021
17 110111
18 110221
19 111211
20 112001
21 121001
22 121021
23 122011
24 200111
25 201101
26 210011
27 211021
28 211111
29 222221
30 1000211
31 1002011
32 1010111
33 1011121
34 1012201
35 1021001

List of values

[2, 1121, 2021, 2111, 10121, 10211, 11201, 12011, 12121, 12211, 21101, 21211, 22111, 101021, 101111, 110021, 110111, 110221, 111211, 112001, 121001, 121021, 122011, 200111, 201101, 210011, 211021, 211111, 222221, 1000211, 1002011, 1010111, 1011121, 1012201, 1021001]