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.

A186946 The smallest integer x > 0 such that the number of prime powers p^k (k>=1) in (x/2,x] equals n.

Table of values

n a(n)
1 2
2 3
3 5
4 9
5 13
6 25
7 29
8 31
9 43
10 49
11 71
12 73
13 81
14 103
15 109
16 113
17 127
18 131
19 139
20 157
21 173
22 181
23 191
24 193
25 199
26 239
27 241
28 269
29 271
30 283
31 289
32 293
33 313
34 349
35 353
36 361
37 373
38 379
39 409
40 419
41 421
42 433
43 439
44 443
45 463
46 499
47 509
48 523
49 571
50 577
51 599
52 601
53 607
54 613
55 619

List of values

[2, 3, 5, 9, 13, 25, 29, 31, 43, 49, 71, 73, 81, 103, 109, 113, 127, 131, 139, 157, 173, 181, 191, 193, 199, 239, 241, 269, 271, 283, 289, 293, 313, 349, 353, 361, 373, 379, 409, 419, 421, 433, 439, 443, 463, 499, 509, 523, 571, 577, 599, 601, 607, 613, 619]