1,2
3142423971953435020522506484187 also belongs to this sequence. [From Max Alekseyev]
Table of n, a(n) for n=1..7.
Cf. A015940, A050259, A123062
Sequence in context: A188455 A015056 A214443 * A136578 A057186 A106939
Adjacent sequences: A015970 A015971 A015972 * A015974 A015975 A015976
nonn,more
Robert G. Wilson v
a(1)=1 is prepended and a(6), a(7) are added by Max Alekseyev, Aug 04 2011
approved
