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A086366 Number of labeled n-node digraphs in which every node belongs to a directed cycle. 0
0, 1, 18, 1699, 587940, 750744901, 3556390155318, 63740128872703879, 4405426607409460017480, 1190852520892329350092354441, 1270598627613805616203391468226138 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..11.

Valery Liskovets, Labeled digraphs in which every node belongs to a directed cycle

CROSSREFS

Cf. A003030, A086193.

Sequence in context: A160307 A003030 A276016 * A086193 A064347 A253121

Adjacent sequences:  A086363 A086364 A086365 * A086367 A086368 A086369

KEYWORD

nonn

AUTHOR

Valery A. Liskovets and Vladeta Jovovic, Sep 04 2003

STATUS

approved

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Last modified December 7 09:15 EST 2021. Contains 349574 sequences. (Running on oeis4.)