A073164 Quotients arising in A073162: A046992(n)/n if n is in A073162.

0, 1, 4, 7, 604, 7552, 28720, 43501, 176868, 3016559

Offset

1,3

Links

Table of n, a(n) for n=1..10.

Formula

Integer values of s(n)=A046992(n)/n.

Example

Sum of first 17 values of Pi(n) equals: 0+1+2+2+3+3+4+4+4+4+5+5+6+6+6+6+7 = 68 = 4*17, Sum(17)/17 = 4 = a(3).

Mathematica

s = 0; Do[s = s + PrimePi[n]; If[ IntegerQ[s/n], Print[{n, s, s/n}]], {n, 1, 10^8}]

Crossrefs

Cf. A046992, A000720, A073162, A073163, A073224.

Sequence in context: A126577 A236288 A348131 * A297215 A134900 A028583

Adjacent sequences: A073161 A073162 A073163 * A073165 A073166 A073167

Keyword

nonn,more

Author

Labos Elemer, Jul 18 2002

Extensions

Edited and extended by Robert G. Wilson v, Jul 20 2002

a(10) from Donovan Johnson, Dec 15 2009

Status

approved