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.

A198805 Number of closed paths of length n whose steps are 15th roots of unity, U_15(n).

Table of values

n a(n)
0 1
1 0
2 0
3 30
4 0
5 360
6 7650
7 0
8 302400
9 4544400
10 11226600
11 324324000
12 4310633250
13 24324300000
14 437404968000
15 5634178329780
16 45972927000000
17 697866761592000
18 8962716395833200
19 88725951057744000
20 1258898645656852200

List of values

[1, 0, 0, 30, 0, 360, 7650, 0, 302400, 4544400, 11226600, 324324000, 4310633250, 24324300000, 437404968000, 5634178329780, 45972927000000, 697866761592000, 8962716395833200, 88725951057744000, 1258898645656852200]

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

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