A184016 - OEIS

%I #8 Mar 30 2012 18:57:13

%S 4,6,8,10,11,13,14,16,18,19,20,22,23,25,26,28,29,30,32,33,34,36,37,38,

%T 40,41,42,43,45,46,47,48,50,51,52,54,55,56,57,58,60,61,62,63,65,66,67,

%U 68,70,71,72,73,74,76,77,78,79,80,82,83,84,85,86,88,89,90,91,92,93,95,96,97,98,99,100,102,103,104,105,106,108,109,110,111,112,113,114,116,117,118,119,120,121,123,124,125,126,127,128,130

%N n+floor(3*sqrt(n)); complement of A184017.

%F a(n)=n+floor(3*sqrt(n)).

%t a=9; b=0;

%t Table[n+Floor[(a*n+b)^(1/2)],{n,100}]

%t Table[n-1+Ceiling[(n*n-b)/a],{n,80}]

%Y Cf. A184017.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, Jan 09 2011