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.

A193681 Discriminant of minimal polynomial of 2*cos(Pi/n) (see A187360).

Table of values

n a(n)
1 1
2 1
3 1
4 8
5 5
6 12
7 49
8 2048
9 81
10 2000
11 14641
12 2304
13 371293
14 1075648
15 1125
16 2147483648
17 410338673
18 1259712
19 16983563041
20 1024000000
21 453789
22 2414538435584
23 41426511213649
24 1358954496
25 762939453125
26 7340688973975552
27 31381059609
28 4739148267126784
29 10260628712958602189
30 324000000

List of values

[1, 1, 1, 8, 5, 12, 49, 2048, 81, 2000, 14641, 2304, 371293, 1075648, 1125, 2147483648, 410338673, 1259712, 16983563041, 1024000000, 453789, 2414538435584, 41426511213649, 1358954496, 762939453125, 7340688973975552, 31381059609, 4739148267126784, 10260628712958602189, 324000000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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