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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.

A224510 Number of simple labeled graphs on {1,2,...,n} such that the node labeled with 1 is in the same component as the node labeled with 2.

Table of values

n a(n)
0 0
1 0
2 1
3 5
4 48
5 874
6 30264
7 2019680
8 263757552
9 68148453616
10 35042313517056
11 35957170070748800
12 73714223732206510848
13 302083108644327384484864
14 2475273899774743284992553984
15 40559859846438312840086623738880
16 1329146799084147159829387611140308992

List of values

[0, 0, 1, 5, 48, 874, 30264, 2019680, 263757552, 68148453616, 35042313517056, 35957170070748800, 73714223732206510848, 302083108644327384484864, 2475273899774743284992553984, 40559859846438312840086623738880, 1329146799084147159829387611140308992]

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

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