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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.

A345258 Number of acyclic digraphs (or DAGs) on n unlabeled vertices with one source and one sink.

Table of values

n a(n)
1 1
2 1
3 2
4 10
5 98
6 1960
7 80176
8 6686760
9 1129588960
10 384610774696
11 263104175114712
12 360908867732030980
13 991603865814038728388
14 5453395569997436383751204
15 60010050181461052836515513108
16 1321051495313052133670927704328040
17 58170762510305449187073353930875222256

List of values

[1, 1, 2, 10, 98, 1960, 80176, 6686760, 1129588960, 384610774696, 263104175114712, 360908867732030980, 991603865814038728388, 5453395569997436383751204, 60010050181461052836515513108, 1321051495313052133670927704328040, 58170762510305449187073353930875222256]

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

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