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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.

A124043 Number of permutations of n distinct letters (ABCD...) each of which appears thrice with three fixed points.

Table of values

n a(n)
0 1
1 0
2 435
3 90944
4 40563765
5 32659846104
6 43036380310735
7 86514409614060000
8 251739515511526387401
9 1017865281673593548065520
10 5534999211214597734889370091
11 39411238922605740572075832485280

List of values

[1, 0, 435, 90944, 40563765, 32659846104, 43036380310735, 86514409614060000, 251739515511526387401, 1017865281673593548065520, 5534999211214597734889370091, 39411238922605740572075832485280]

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

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