2,2

Table of n, a(n) for n=2..68.

Table[PrimePi[n^2]/(n*PrimePi[n]), {n, 1, 100}]

Cf. A161961.

Sequence in context: A219224 A265532 A112858 * A287428 A232933 A303700

Adjacent sequences: A161957 A161958 A161959 * A161961 A161962 A161963

nonn,frac

Daniel Tisdale, Jun 22 2009

More terms from R. J. Mathar, Oct 05 2009

approved