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.

A124073 Number of permutations of n distinct letters (ABCD...) each of which appears 4 times with one fixed point.

Table of values

n a(n)
1 0
2 0
3 1824
4 3662976
5 18743463360
6 206032439164800
7 4316868116405748960
8 157846181105000772889344
9 9416135162778291726755147136
10 869099332136838873667455070091520
11 118924204222864960529120670496333629600
12 23292190275693669075772234927951426886017920

List of values

[0, 0, 1824, 3662976, 18743463360, 206032439164800, 4316868116405748960, 157846181105000772889344, 9416135162778291726755147136, 869099332136838873667455070091520, 118924204222864960529120670496333629600, 23292190275693669075772234927951426886017920]

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

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