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.

A320256 k-digit primes with the same even digit repeated k-1 times and a single odd digit.

Table of values

n a(n)
1 3
2 5
3 7
4 23
5 29
6 41
7 43
8 47
9 61
10 67
11 83
12 89
13 223
14 227
15 229
16 443
17 449
18 661
19 881
20 883
21 887
22 2221
23 4441
24 4447
25 6661
26 8887
27 22229
28 44449
29 88883
30 444443
31 444449
32 666667
33 888887
34 22222223
35 66666667
36 88888883
37 222222227
38 444444443
39 666666667
40 888888883
41 888888887

List of values

[3, 5, 7, 23, 29, 41, 43, 47, 61, 67, 83, 89, 223, 227, 229, 443, 449, 661, 881, 883, 887, 2221, 4441, 4447, 6661, 8887, 22229, 44449, 88883, 444443, 444449, 666667, 888887, 22222223, 66666667, 88888883, 222222227, 444444443, 666666667, 888888883, 888888887]