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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.

A324805 a(n) is the number of endofunctions on a set of size n with preimage constraint {0, 1, 2, 3, 4, 5}.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 256
5 3125
6 46650
7 823242
8 16765784
9 387012024
10 9985309740
11 284765293890
12 8894836233360
13 302004807340236
14 11074484342033112
15 436189649979463380
16 18365270213907096480
17 823145873249916696480
18 39130443293729571463680
19 1966482487351260975960864

List of values

[1, 1, 4, 27, 256, 3125, 46650, 823242, 16765784, 387012024, 9985309740, 284765293890, 8894836233360, 302004807340236, 11074484342033112, 436189649979463380, 18365270213907096480, 823145873249916696480, 39130443293729571463680, 1966482487351260975960864]

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

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