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.

A343091 Number of rooted toroidal maps with n edges and no separating cycles or isthmuses.

Table of values

n a(n)
2 1
3 8
4 67
5 520
6 3978
7 29988
8 224295
9 1667888
10 12352126
11 91196512
12 671717950
13 4938370736
14 36251576684
15 265787720908
16 1946696834735
17 14245828801024
18 104173927718694
19 761302443498960
20 5560564162774202
21 40595140188994224
22 296242813675800300
23 2161031983823779912

List of values

[1, 8, 67, 520, 3978, 29988, 224295, 1667888, 12352126, 91196512, 671717950, 4938370736, 36251576684, 265787720908, 1946696834735, 14245828801024, 104173927718694, 761302443498960, 5560564162774202, 40595140188994224, 296242813675800300, 2161031983823779912]

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

Content is available under The OEIS End-User License Agreement.