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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.

A376017 a(n) = Sum_{d|n} d^(n/d - d) * binomial(n/d,d).

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 5
6 12
7 7
8 32
9 10
10 90
11 11
12 264
13 13
14 686
15 105
16 1809
17 17
18 5166
19 19
20 11560
21 2856
22 28182
23 23
24 81456
25 26
26 159770
27 61263
28 375004
29 29
30 1122660
31 31
32 1984032
33 1082598
34 4456482
35 560
36 14486329
37 37
38 22413350
39 16888053
40 50674560
41 41
42 174582072
43 43
44 247627820
45 241884450

List of values

[1, 2, 3, 5, 5, 12, 7, 32, 10, 90, 11, 264, 13, 686, 105, 1809, 17, 5166, 19, 11560, 2856, 28182, 23, 81456, 26, 159770, 61263, 375004, 29, 1122660, 31, 1984032, 1082598, 4456482, 560, 14486329, 37, 22413350, 16888053, 50674560, 41, 174582072, 43, 247627820, 241884450]

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

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