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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.

A362821 Number of labeled right involutory Płonka magmas with n elements.

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 70
5 916
6 16636
7 494824
8 20486432
9 1320568624
10 119526633136
11 16466317431136
12 3210471529800448
13 940911157770908416
14 392559353168479443584
15 244017910517578226511616
16 216775189886094655708439296
17 284778404550532041821957456896
18 536018349047631899870416803595264

List of values

[1, 1, 2, 10, 70, 916, 16636, 494824, 20486432, 1320568624, 119526633136, 16466317431136, 3210471529800448, 940911157770908416, 392559353168479443584, 244017910517578226511616, 216775189886094655708439296, 284778404550532041821957456896, 536018349047631899870416803595264]

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

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