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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.

A020547 2nd Euler polynomial x^2 - x evaluated at x=n!.

Table of values

n a(n)
0 0
1 0
2 2
3 30
4 552
5 14280
6 517680
7 25396560
8 1625662080
9 131681531520
10 13168185811200
11 1593350882323200
12 229442532323558400
13 38775788037405619200
14 7600054456464819148800
15 1710012252722891749632000
16 437763136697374129754112000

List of values

[0, 0, 2, 30, 552, 14280, 517680, 25396560, 1625662080, 131681531520, 13168185811200, 1593350882323200, 229442532323558400, 38775788037405619200, 7600054456464819148800, 1710012252722891749632000, 437763136697374129754112000]

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

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