1,7
Eric Weisstein's World of Mathematics, Isospectral Graphs
Cf. A099881, A099883.
Sequence in context: A123803 A101930 A174779 * A121293 A057106 A080973
Adjacent sequences: A099879 A099880 A099881 * A099883 A099884 A099885
nonn,more
Eric Weisstein (eric(AT)weisstein.com), Oct 28, 2004