1,2
a(8) (if it exists) > 10^8. - Hiroaki Yamanouchi, Sep 11 2014
Table of n, a(n) for n=1..7.
Sequence in context: A337692 A331795 A005724 * A093376 A051571 A019654
Adjacent sequences: A215193 A215194 A215195 * A215197 A215198 A215199
nonn,more
Naohiro Nomoto, Aug 05 2012
a(6)-a(7) from Max Alekseyev, Aug 18 2013
approved