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.

A046887 Numbers n such that the cyclotomic polynomial of order n has a nonzero coefficient which does not appear in any cyclotomic polynomials of lower order.

Table of values

n a(n)
1 1
2 105
3 165
4 385
5 595
6 1365
7 1785
8 2145
9 2805
10 3135
11 6545
12 7917
13 10465
14 11305
15 15015
16 17255
17 20615
18 25935
19 26565
20 40755
21 106743
22 171717
23 255255
24 279565
25 285285
26 327845
27 350455
28 373065
29 463505

List of values

[1, 105, 165, 385, 595, 1365, 1785, 2145, 2805, 3135, 6545, 7917, 10465, 11305, 15015, 17255, 20615, 25935, 26565, 40755, 106743, 171717, 255255, 279565, 285285, 327845, 350455, 373065, 463505]