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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.

A103941 Number of unrooted loopless n-edge maps in the plane (planar with a distinguished outside face).

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 22
5 103
6 614
7 3872
8 26414
9 186988
10 1367976
11 10254326
12 78461338
13 610598818
14 4821248244
15 38546510368
16 311560875422
17 2542507084588
18 20925300483992
19 173530381632724
20 1448900079476152
21 12172334379246523
22 102833593763830038
23 873187910184763024
24 7449120536014301138

List of values

[1, 1, 2, 6, 22, 103, 614, 3872, 26414, 186988, 1367976, 10254326, 78461338, 610598818, 4821248244, 38546510368, 311560875422, 2542507084588, 20925300483992, 173530381632724, 1448900079476152, 12172334379246523, 102833593763830038, 873187910184763024, 7449120536014301138]

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

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