1,2
Previous terms are concatenated into one large integer. Next terms are 184 and 420 digits long.
Cf. A005150, A045981.
Sequence in context: A068839 A177360 A060857 * A059134 A007790 A195857
Adjacent sequences: A045979 A045980 A045981 * A045983 A045984 A045985
nonn,easy,base,nice
N. J. A. Sloane (njas(AT)research.att.com).
More terms from Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1999.