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A060335 Number of n-node labeled acyclic digraphs with 3 out-points. 2
1, 28, 1610, 211820, 64144675, 44218682312, 68501035223124, 235728863806525320, 1784437537982029455525, 29470895991194487015464740, 1054563682428338672254476697886, 81276604641664521211218527866093204 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,2
REFERENCES
R. W. Robinson, Counting labeled acyclic digraphs, pp. 239-273 of F. Harary, editor, New Directions in the Theory of Graphs. Academic Press, NY, 1973.
LINKS
PROG
(PARI) \\ requires A058876.
my(T=A058876(20)); vector(#T-2, n, T[n+2][3]) \\ Andrew Howroyd, Dec 27 2021
CROSSREFS
A diagonal of A058876.
Sequence in context: A042512 A285029 A163033 * A335371 A335370 A335368
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Apr 10 2001
STATUS
approved

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Last modified February 27 04:33 EST 2024. Contains 370362 sequences. (Running on oeis4.)