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A054593 Number of disconnected labeled digraphs with n nodes. 0
0, 1, 10, 262, 21496, 6433336, 7566317200, 35247649746352, 648839620390462336, 47230175230392839683456, 13617860445102311268975051520, 15577054031612736747163633737901312 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

a(n)=2^(n*(n-1))-A003027(n)

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Cf. A054592.

Sequence in context: A084999 A268730 A217911 * A290041 A160481 A060608

Adjacent sequences:  A054590 A054591 A054592 * A054594 A054595 A054596

KEYWORD

easy,nonn

AUTHOR

Vladeta Jovovic, Apr 15 2000

STATUS

approved

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Last modified February 23 05:58 EST 2019. Contains 320411 sequences. (Running on oeis4.)