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A101388 Number of n-vertex unlabeled digraphs without endpoints. +0
1
1, 1, 8, 137, 7704, 1413982 (list; graph; listen)
OFFSET

1,3

CROSSREFS

Cf. A100548 (labeled case), A004110, A004108, A059166, A059167.

Sequence in context: A134053 A136472 A145404 this_sequence A050789 A091060 A092703

Adjacent sequences: A101385 A101386 A101387 this_sequence A101389 A101390 A101391

KEYWORD

more,nonn

AUTHOR

Goran Kilibarda, Zoran Maksimovic, Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 14 2005

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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