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.

A214816 Number of unsensed combinatorial maps with n edges on an orientable surface of any genus.

Table of values

n a(n)
0 1
1 2
2 5
3 20
4 96
5 644
6 5839
7 67834
8 970568
9 16256556
10 308620966
11 6506035400
12 150358570914
13 3775903806928
14 102348067516576
15 2977979542305736
16 92579723269733557
17 3062602106878957610
18 107418879166917701583
19 3981908920500346885116
20 155550644128029095714786

List of values

[1, 2, 5, 20, 96, 644, 5839, 67834, 970568, 16256556, 308620966, 6506035400, 150358570914, 3775903806928, 102348067516576, 2977979542305736, 92579723269733557, 3062602106878957610, 107418879166917701583, 3981908920500346885116, 155550644128029095714786]

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

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