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.

A198434 Number of simple symmetric permutations of degree 2n (or 2n+1).

Table of values

n a(n)
2 2
3 10
4 90
5 966
6 12338
7 181470
8 3018082
9 55995486
10 1146939010
11 25716746430
12 626755197698
13 16502357651966
14 466944932413442
15 14133259249586174
16 455715081098876418
17 15596665064842012158
18 564724372634695925762
19 21568978799171323200510
20 866674159679235417061378
21 36548294282449538711357438

List of values

[2, 10, 90, 966, 12338, 181470, 3018082, 55995486, 1146939010, 25716746430, 626755197698, 16502357651966, 466944932413442, 14133259249586174, 455715081098876418, 15596665064842012158, 564724372634695925762, 21568978799171323200510, 866674159679235417061378, 36548294282449538711357438]

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

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