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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.

A322635 Number of regular graphs with loops on n labeled vertices.

Table of values

n a(n)
1 2
2 4
3 4
4 24
5 78
6 1908
7 23368
8 1961200
9 75942758
10 25703384940
11 4184912454930
12 4462909435830552
13 2245354417775573206
14 10567193418810168583576
15 24001585002447984453495392
16 348615956932626441906675011568
17 2412972383955442904868321667433106
18 162906453913051798826796439651249753404

List of values

[2, 4, 4, 24, 78, 1908, 23368, 1961200, 75942758, 25703384940, 4184912454930, 4462909435830552, 2245354417775573206, 10567193418810168583576, 24001585002447984453495392, 348615956932626441906675011568, 2412972383955442904868321667433106, 162906453913051798826796439651249753404]

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

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