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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.

A361585 Number of digraphs on n unlabeled nodes whose strongly connected components are directed cycles.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 8
5 28
6 736
7 17879
8 1568614
9 196581247
10 62857465075
11 34431266945361
12 42146672798547398
13 95881304594606248756
14 459546334152150732106700
15 4253461062245855670436620669
16 80700118619568448244440535541825
17 3011390106783578987361705575335328331

List of values

[1, 0, 1, 1, 8, 28, 736, 17879, 1568614, 196581247, 62857465075, 34431266945361, 42146672798547398, 95881304594606248756, 459546334152150732106700, 4253461062245855670436620669, 80700118619568448244440535541825, 3011390106783578987361705575335328331]

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

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