OFFSET
1,7
LINKS
J. B. Hendrickson and C. A. Parks, Generation and Enumeration of Carbon skeletons, J. Chem. Inf. Comput. Sci., 31 (1991), 101-107. See Table 2, column 8 on page 103.
Michael A. Kappler, GENSMI: Exhaustive Enumeration of Simple Graphs [gives different a(11)].
PROG
(nauty/bash)
for n in {7..13}; do geng -c -D4 ${n} $((n+7)):$((n+7)) -u; done # Andrey Zabolotskiy, Nov 24 2017
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jonathan Vos Post, Dec 21 2005
EXTENSIONS
New name, offset corrected, a(11) corrected, and a(14) added by Andrey Zabolotskiy, Nov 24 2017
a(15)-a(20) added by Georg Grasegger, Jun 05 2023
STATUS
approved