1,2

a(n)+A081305(n)=n; a(114)=A081305(114)=57;

a(n)>=n/2 for n<=114, a(n)<n/2 for n>114.

Table of n, a(n) for n=1..73.

Cf. A081306, A081303.

Sequence in context: A128635 A100637 A081063 * A137721 A245339 A324161

Adjacent sequences: A081301 A081302 A081303 * A081305 A081306 A081307

nonn

Reinhard Zumkeller, Mar 17 2003

approved