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
Andrew Howroyd, Table of n, a(n) for n = 3..50
PROG
(PARI) \\ requires A058876.
my(T=A058876(20)); vector(#T-2, n, T[n+2][3]) \\ Andrew Howroyd, Dec 27 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Apr 10 2001
STATUS
approved