1,1
See A003828 for references and links.
Table of n, a(n) for n=1..7.
Cf. A003828, A078519, A078520.
Sequence in context: A114660 A183967 A175598 * A130001 A116228 A116253
Adjacent sequences: A078515 A078516 A078517 * A078519 A078520 A078521
nonn
N. J. A. Sloane, Jan 07 2003
approved