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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.

A032188 Number of labeled series-reduced mobiles (circular rooted trees) with n leaves (root has degree 0 or >= 2).

Table of values

n a(n)
1 1
2 1
3 5
4 41
5 469
6 6889
7 123605
8 2620169
9 64074901
10 1775623081
11 54989743445
12 1882140936521
13 70552399533589
14 2874543652787689
15 126484802362553045
16 5977683917752887689
17 301983995802099667861
18 16239818347465293071401
19 926248570498763547197525
20 55847464116157184894240201

List of values

[1, 1, 5, 41, 469, 6889, 123605, 2620169, 64074901, 1775623081, 54989743445, 1882140936521, 70552399533589, 2874543652787689, 126484802362553045, 5977683917752887689, 301983995802099667861, 16239818347465293071401, 926248570498763547197525, 55847464116157184894240201]

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

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