1,6
T. D. Noe, Table of n, a(n) for n=1..2000
Cf. A010340
Sequence in context: A070078 A054438 A174947 * A072772 A124314 A059087
Adjacent sequences: A010338 A010339 A010340 * A010342 A010343 A010344
nonn
N. J. A. Sloane (njas(AT)research.att.com), Walter Gilbert