OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Clique Number
Eric Weisstein's World of Mathematics, Paley Graph
EXAMPLE
a(1) = 2, since the Paley graph of order 5 is a 5-cycle, and contains no triangle.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jeremy F. Alm, Oct 20 2018
STATUS
approved