1,1
Table of n, a(n) for n=1..4.
Cf. A050643, A048565, A050648.
Sequence in context: A017295 A154713 A061719 * A050648 A292695 A070903
Adjacent sequences: A050639 A050640 A050641 * A050643 A050644 A050645
nonn,base,more
Patrick De Geest, Jul 15 1999
approved