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.

A357174 a(n) = n! * Sum_{k=0..floor(n/3)} (n - 3*k)^n/(n - 3*k)!.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 280
5 5045
6 134136
7 4269223
8 153188176
9 6657007113
10 371930499280
11 25072409219891
12 1872319689314856
13 154583203638018493
14 14784597239881491400
15 1641532369038107170815
16 201617558936011146124576
17 26755058016106471234608017

List of values

[1, 1, 4, 27, 280, 5045, 134136, 4269223, 153188176, 6657007113, 371930499280, 25072409219891, 1872319689314856, 154583203638018493, 14784597239881491400, 1641532369038107170815, 201617558936011146124576, 26755058016106471234608017]

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

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