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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.

A097998 Number of connected outerplanar graphs on n labeled nodes.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 37
5 602
6 14436
7 458062
8 18029992
9 845360028
10 45938606320
11 2836966508216
12 196156795008384
13 15008752290350656
14 1258841795197091392
15 114838947237881287800
16 11319937495659268412416
17 1198945386491423345685968
18 135784713567893046210563328

List of values

[1, 1, 1, 4, 37, 602, 14436, 458062, 18029992, 845360028, 45938606320, 2836966508216, 196156795008384, 15008752290350656, 1258841795197091392, 114838947237881287800, 11319937495659268412416, 1198945386491423345685968, 135784713567893046210563328]

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

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