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.

A085900 Numbers k such that k-th cyclotomic polynomial has exactly 3 negative coefficients.

Table of values

n a(n)
0 14
1 15
2 28
3 30
4 45
5 56
6 60
7 75
8 90
9 98
10 112
11 120
12 135
13 150
14 180
15 196
16 224
17 225
18 240
19 270
20 300
21 360
22 375
23 392
24 405
25 448
26 450
27 480
28 540
29 600
30 675
31 686
32 720
33 750
34 784
35 810
36 896
37 900
38 960
39 1080
40 1125
41 1200
42 1215
43 1350
44 1372
45 1440
46 1500
47 1568
48 1620
49 1792
50 1800
51 1875

List of values

[14, 15, 28, 30, 45, 56, 60, 75, 90, 98, 112, 120, 135, 150, 180, 196, 224, 225, 240, 270, 300, 360, 375, 392, 405, 448, 450, 480, 540, 600, 675, 686, 720, 750, 784, 810, 896, 900, 960, 1080, 1125, 1200, 1215, 1350, 1372, 1440, 1500, 1568, 1620, 1792, 1800, 1875]