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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.

A185194 Number of unlabeled digraphs on n vertices such that every vertex has outdegree 4.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 40
7 35317
8 56150820
9 111359017198
10 278086517599356
11 877760741062694898
12 3482578978170418753715
13 17204168691253789080138981
14 104690934973509839187285618311
15 776311587313178356520412354767734
16 6942595716239018207126337605515965388

List of values

[0, 0, 0, 0, 1, 40, 35317, 56150820, 111359017198, 278086517599356, 877760741062694898, 3482578978170418753715, 17204168691253789080138981, 104690934973509839187285618311, 776311587313178356520412354767734, 6942595716239018207126337605515965388]

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

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