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.

A381239 Primes of the form Sum_{k >= 0} floor(m/5^k) for some number m.

Table of values

n a(n)
1 2
2 3
3 7
4 13
5 19
6 31
7 37
8 41
9 43
10 47
11 53
12 59
13 71
14 83
15 89
16 97
17 101
18 103
19 107
20 109
21 113
22 127
23 131
24 137
25 139
26 149
27 151
28 157
29 163
30 181
31 191
32 193
33 197
34 199
35 211
36 227
37 233
38 239
39 251
40 257
41 263
42 269
43 271
44 277
45 281
46 283
47 293
48 307
49 313
50 331
51 337
52 347
53 349
54 353
55 359

List of values

[2, 3, 7, 13, 19, 31, 37, 41, 43, 47, 53, 59, 71, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 181, 191, 193, 197, 199, 211, 227, 233, 239, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 313, 331, 337, 347, 349, 353, 359]