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.

A195527 Integers n that are k-gonal for precisely 3 distinct values of k, where k >= 3.

Table of values

n a(n)
1 15
2 21
3 28
4 51
5 55
6 64
7 70
8 75
9 78
10 91
11 96
12 100
13 111
14 112
15 117
16 126
17 135
18 136
19 141
20 144
21 145
22 148
23 154
24 156
25 165
26 175
27 176
28 186
29 189
30 195
31 201
32 204
33 216
34 232
35 235
36 238
37 246
38 255
39 256
40 285
41 286
42 288
43 291
44 297
45 300
46 306
47 315
48 316
49 321
50 322
51 324
52 330
53 333
54 336

List of values

[15, 21, 28, 51, 55, 64, 70, 75, 78, 91, 96, 100, 111, 112, 117, 126, 135, 136, 141, 144, 145, 148, 154, 156, 165, 175, 176, 186, 189, 195, 201, 204, 216, 232, 235, 238, 246, 255, 256, 285, 286, 288, 291, 297, 300, 306, 315, 316, 321, 322, 324, 330, 333, 336]