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.

A198802 Number of closed paths of length n whose steps are 18th roots of unity, U_18(n).

Table of values

n a(n)
0 1
1 0
2 18
3 36
4 918
5 5400
6 82800
7 801360
8 10907190
9 132053040
10 1802041668
11 24199809480
12 340640607384
13 4834708246368
14 70229958125184
15 1032223723667136
16 15391538570569590
17 231935110984687968
18 3531542904056225916
19 54244559313713885688
20 839979883121036697468

List of values

[1, 0, 18, 36, 918, 5400, 82800, 801360, 10907190, 132053040, 1802041668, 24199809480, 340640607384, 4834708246368, 70229958125184, 1032223723667136, 15391538570569590, 231935110984687968, 3531542904056225916, 54244559313713885688, 839979883121036697468]

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

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