1,1
Cf. A068664, A068666, A068667, A068971, A068973, A068974.
Sequence in context: A117547 A037091 A127303 * A116437 A048867 A113626
Adjacent sequences: A068969 A068970 A068971 * A068973 A068974 A068975
nonn,base,hard
Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 30 2002.