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.

A004105 Number of point-self-dual nets with 2n nodes. Also number of directed 2-multigraphs with loops on n nodes.

Table of values

n a(n)
0 1
1 3
2 45
3 3411
4 1809459
5 7071729867
6 208517974495911
7 47481903377454219975
8 85161307642554753639601848
9 1221965550839348597865127102714827
10 142024245093355901785105779901319683262778
11 135056692539998733060710198802224149631056479068139

List of values

[1, 3, 45, 3411, 1809459, 7071729867, 208517974495911, 47481903377454219975, 85161307642554753639601848, 1221965550839348597865127102714827, 142024245093355901785105779901319683262778, 135056692539998733060710198802224149631056479068139]

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

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