OFFSET
1,4
COMMENTS
The range for the subindex k is from n-1 to n(n-1).
Obtained from A054733 by removing leading zeros.
REFERENCES
E. Palmer and F. Harary, Graphical Enumeration, Academic Press, 1973.
LINKS
Marko R. Riedel, Number of distinct connected digraphs
Marko Riedel, Maple code for sequences A052283, A283753.
EXAMPLE
First rows are:
1;
1, 1;
3, 4, 4, 1, 1;
8, 22, 37, 47, 38, 27, 13, 5, 1, 1;
27, 108, 326, 667, 1127, 1477, 1665, 1489, 1154, 707, 379, ...
PROG
(PARI) \\ See A054733 for G, InvEulerMTS.
row(n)={Vecrev(polcoef(InvEulerMTS(sum(i=0, n, G(i, y)*x^i, O(x*x^n))), n)/y^(n-1))}
{ for(n=1, 6, print(row(n))) } \\ Andrew Howroyd, Jan 28 2022
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Marko Riedel, Mar 15 2017
STATUS
approved