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.

A126779 Number of functions f:{1,2,...,n}->{1,2,...,n} such that Im(f) contains 3 fixed elements.

Table of values

n a(n)
3 6
4 60
5 750
6 11340
7 201726
8 4131036
9 95750430
10 2478397020
11 70864914846
12 2218385781612
13 75463626886830
14 2771883228523500
15 109340261175108606
16 4609962410815813308
17 206883575626027168830
18 9846362287666897852860

List of values

[6, 60, 750, 11340, 201726, 4131036, 95750430, 2478397020, 70864914846, 2218385781612, 75463626886830, 2771883228523500, 109340261175108606, 4609962410815813308, 206883575626027168830, 9846362287666897852860]

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

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