A097429 - OEIS

%I #4 Oct 01 2013 17:58:02

%S 0,0,1,1,1,2,2,2,2,3,3,3,3,3,3,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,6,6,6,6,

%T 6,6,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,10,10,

%U 10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12

%N Integer part of the radii of circles with prime areas.

%F Radius = floor(sqrt(Area/Pi)).

%e If A = 5. floor(sqrt(5/Pi)) = 1, the third entry.

%o (PARI) f(n) = forprime(x=1,n,print1(floor(sqrt(x/Pi))","))

%K nonn

%O 2,6

%A _Cino Hilliard_, Aug 22 2004