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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.

A328123 Number of unrooted level-2 phylogenetic networks with (n+1) labeled leaves, when multiple (i.e. parallel) edges are allowed.

Table of values

n a(n)
1 1
2 9
3 282
4 14697
5 1071750
6 100467405
7 11509922970
8 1558302613245
9 243426592473750
10 43095781327975425
11 8527098853816839450
12 1864790504534293823025
13 446647359698685492697350
14 116281255808439040209815925
15 32694665144001284972518220250

List of values

[1, 9, 282, 14697, 1071750, 100467405, 11509922970, 1558302613245, 243426592473750, 43095781327975425, 8527098853816839450, 1864790504534293823025, 446647359698685492697350, 116281255808439040209815925, 32694665144001284972518220250]

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

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