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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.

A099702 Consider the family of directed multigraphs enriched by the species of simple graphs. Sequence gives number of those multigraphs with n labeled loops and arcs.

Table of values

n a(n)
0 1
1 2
2 17
3 256
4 5719
5 173446
6 6768075
7 328288840
8 19468007553
9 1458080017522
10 183476204746761
11 87209577493989776
12 154656821805639801687
13 617619828457724835488214
14 5008102331929281541386123923
15 81618549234469098721106601012472
16 2666950050438611111026601803629686849

List of values

[1, 2, 17, 256, 5719, 173446, 6768075, 328288840, 19468007553, 1458080017522, 183476204746761, 87209577493989776, 154656821805639801687, 617619828457724835488214, 5008102331929281541386123923, 81618549234469098721106601012472, 2666950050438611111026601803629686849]

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

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