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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.

A099706 Consider the family of directed multigraphs enriched by the species of directed graphs. Sequence gives number of those multigraphs with n labeled loops and arcs.

Table of values

n a(n)
0 1
1 4
2 84
3 3568
4 305712
5 87782720
6 144600947392
7 1139235294403328
8 37012349010095737088
9 4840037457225169875031040
10 2535930555678883610642223895552
11 5317274645187046706095607711946092544
12 44602319906972740832371696997145322907873280

List of values

[1, 4, 84, 3568, 305712, 87782720, 144600947392, 1139235294403328, 37012349010095737088, 4840037457225169875031040, 2535930555678883610642223895552, 5317274645187046706095607711946092544, 44602319906972740832371696997145322907873280]

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

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