2,1

See A193555.

Table of n, a(n) for n=2..16.

Cf. A193555 corresponding numerators.

Sequence in context: A300153 A182781 A291085 * A120438 A192977 A038800

Adjacent sequences: A193553 A193554 A193555 * A193557 A193558 A193559

nonn,frac,hard

Hugo Pfoertner, Jul 30 2011

approved