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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.

A101389 Number of n-vertex unlabeled oriented graphs without endpoints.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 21
5 369
6 16929
7 1913682
8 546626268
9 406959998851
10 808598348346150
11 4358157210587930509
12 64443771774627635711718
13 2636248889492487709302815665
14 300297332862557660078111708007894
15 95764277032243987785712142452776403618
16 85885545190811866954428990373255822969983915

List of values

[1, 1, 1, 3, 21, 369, 16929, 1913682, 546626268, 406959998851, 808598348346150, 4358157210587930509, 64443771774627635711718, 2636248889492487709302815665, 300297332862557660078111708007894, 95764277032243987785712142452776403618, 85885545190811866954428990373255822969983915]

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

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