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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.

A079755 Operation count to create all permutations of n distinct elements using the "streamlined" version of Knuth's Algorithm L (lexicographic permutation generation).

Table of values

n a(n)
3 0
4 3
5 23
6 148
7 1054
8 8453
9 76109
10 761126
11 8372436
12 100469287
13 1306100803
14 18285411320
15 274281169898
16 4388498718473
17 74604478214169
18 1342880607855178
19 25514731549248544
20 510294630984971051
21 10716187250684392271
22 235756119515056630172
23 5422390748846302494198
24 130137377972311259861005

List of values

[0, 3, 23, 148, 1054, 8453, 76109, 761126, 8372436, 100469287, 1306100803, 18285411320, 274281169898, 4388498718473, 74604478214169, 1342880607855178, 25514731549248544, 510294630984971051, 10716187250684392271, 235756119515056630172, 5422390748846302494198, 130137377972311259861005]

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

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