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.

A000087 Number of unrooted nonseparable planar maps with n edges and a distinguished face.

Table of values

n a(n)
1 2
2 1
3 2
4 4
5 10
6 37
7 138
8 628
9 2972
10 14903
11 76994
12 409594
13 2222628
14 12281570
15 68864086
16 391120036
17 2246122574
18 13025721601
19 76194378042
20 449155863868
21 2666126033850
22 15925105028685
23 95664343622234
24 577651490729530

List of values

[2, 1, 2, 4, 10, 37, 138, 628, 2972, 14903, 76994, 409594, 2222628, 12281570, 68864086, 391120036, 2246122574, 13025721601, 76194378042, 449155863868, 2666126033850, 15925105028685, 95664343622234, 577651490729530]

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

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