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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.

A218003 Number of degree-n permutations of order a power of 3.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 9
5 21
6 81
7 351
8 1233
9 46089
10 434241
11 2359611
12 27387801
13 264333213
14 1722161169
15 16514298711
16 163094452641
17 1216239520401
18 50883607918593
19 866931703203699
20 8473720481213481
21 166915156382509221
22 2699805625227141201
23 28818706120636531023
24 439756550972215638129
25 6766483260087819272601
26 77096822666547068590401
27 406859605390184444341678251

List of values

[1, 1, 1, 3, 9, 21, 81, 351, 1233, 46089, 434241, 2359611, 27387801, 264333213, 1722161169, 16514298711, 163094452641, 1216239520401, 50883607918593, 866931703203699, 8473720481213481, 166915156382509221, 2699805625227141201, 28818706120636531023, 439756550972215638129, 6766483260087819272601, 77096822666547068590401, 406859605390184444341678251]

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

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