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.

A364344 Number of endofunctions on [n] such that the number of elements that are mapped to i is a multiple or a divisor of i.

Table of values

n a(n)
0 1
1 1
2 4
3 20
4 177
5 1462
6 21919
7 254802
8 4816788
9 82401465
10 1929926410
11 35256890748
12 1152938630784
13 24977973856643
14 823036511854847
15 24332827884557037
16 954801492779273665
17 27023410818058291822
18 1309814517293654535339
19 41375530521928893861920

List of values

[1, 1, 4, 20, 177, 1462, 21919, 254802, 4816788, 82401465, 1929926410, 35256890748, 1152938630784, 24977973856643, 823036511854847, 24332827884557037, 954801492779273665, 27023410818058291822, 1309814517293654535339, 41375530521928893861920]

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

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