OFFSET
0,5
COMMENTS
The labeled version is A372168.
LINKS
Eric Weisstein's World of Mathematics, Triangle-Free Graph
FORMULA
First differences of A006785.
EXAMPLE
Non-isomorphic representatives of the a(5) = 7 graphs:
12-35-45
13-24-35-45
14-25-35-45
15-25-35-45
12-13-24-35-45
15-23-24-35-45
13-14-23-24-35-45
KEYWORD
nonn,more
AUTHOR
Gus Wiseman, Apr 23 2024
STATUS
approved