1,1

Table of n, a(n) for n=1..75.

Cf. A000404, A004709.

Sequence in context: A066468 A088769 A057986 * A306929 A105140 A107018

Adjacent sequences: A274201 A274202 A274203 * A274205 A274206 A274207

nonn

Altug Alkan, Jun 13 2016

Terms checked by Giovanni Resta, Jun 13 2016

approved