1,2
Generated at the suggestion of Ed Pegg Jr. (ed(AT)mathpuzzle.com)
Eric Weisstein's World of Mathematics, Integral Graph
Cf. A064731.
Sequence in context: A113292 A050291 A135452 * A030436 A030227 A180272
Adjacent sequences: A077024 A077025 A077026 * A077028 A077029 A077030
nonn,more
Eric Weisstein (eric(AT)weisstein.com), Oct 18, 2002