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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.

A324807 a(n) is the number of endofunctions on a set of size n with preimage constraint {0, 1, 2, 3, 4, 5, 6, 7}.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 256
5 3125
6 46656
7 823543
8 16777208
9 387419832
10 9999962640
11 285309793890
12 8916009869448
13 302870744070180
14 11111793078586200
15 437883125030581230
16 18446183535139520160
17 827209994815650320160
18 39344710668752223656064
19 1978320731100920186439888

List of values

[1, 1, 4, 27, 256, 3125, 46656, 823543, 16777208, 387419832, 9999962640, 285309793890, 8916009869448, 302870744070180, 11111793078586200, 437883125030581230, 18446183535139520160, 827209994815650320160, 39344710668752223656064, 1978320731100920186439888]

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

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