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.

A126781 Number of functions f:{1,2,...,n}->{1,2,...,n} such that Im(f) contains 6 fixed elements.

Table of values

n a(n)
6 720
7 20160
8 514080
9 13608000
10 385363440
11 11760819840
12 386860668480
13 13682898028800
14 518666099711760
15 20997894426949440
16 904827327153291360
17 41367795437773022400
18 2000634709955550047280
19 102066613831917982920960

List of values

[720, 20160, 514080, 13608000, 385363440, 11760819840, 386860668480, 13682898028800, 518666099711760, 20997894426949440, 904827327153291360, 41367795437773022400, 2000634709955550047280, 102066613831917982920960]

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

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