A243241 Number of connected simple graphs on n nodes that are not strongly regular.

0, 0, 1, 4, 19, 109, 852, 11114, 261077, 11716566

Offset: 1

Author

Travis Hoppe and Anna Petrone, Jun 01 2014

Keywords

• nonn
• more

Links

• Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
• Eric Weisstein's World of Mathematics, Strongly Regular Graph

Formula

a(n) = A001349(n) - A088741(n).