OFFSET
1,5
COMMENTS
Terms may be computed using the tools geng and planarg in nauty.
LINKS
Brendan McKay and Adolfo Piperno, nauty and Traces
PROG
(nauty)
# count graphs for the sequence by number of vertices v, sum over v afterwards
geng -C $v $n:$n | planarg -q | countg -q # Georg Grasegger, Jun 05 2023
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Andrew Howroyd, May 04 2021
EXTENSIONS
a(21)-a(26) added by Georg Grasegger, Jun 05 2023
STATUS
approved