login
A052439
Number of simple unlabeled n-node graphs with 3 center nodes.
5
0, 0, 3, 0, 4, 18, 119, 1055, 17297, 486446, 24269709, 2095669951
OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, Graph Center
CROSSREFS
Column 3 of A294525 for n > 3.
Sequence in context: A375856 A094665 A309053 * A261239 A261214 A143073
KEYWORD
nonn,more
EXTENSIONS
a(8)-a(10) from Andrew Howroyd, Nov 02 2017
a(11)-a(12) from Sean A. Irvine, Nov 23 2021
STATUS
approved