1,6
Eric Weisstein's World of Mathematics, Weakly Regular Graph
Cf. A000517, A076435.
Sequence in context: A067709 A102545 A045521 * A192150 A049441 A193868
Adjacent sequences: A076431 A076432 A076433 * A076435 A076436 A076437
nonn,more
Eric Weisstein (eric(AT)weisstein.com), Oct 11, 2002