A023419 - OEIS

A023419

a(n) = c([ n/2 ]) + c([ n/3 ]) + ... + c([ n/n ]) for n >=3, where a(1) = 1, a(2) = 2 and c(n) = n-th number not in sequence a( ).

%I #4 Mar 30 2012 18:55:51

%S 1,2,6,10,13,18,21,27,31,36,39,47,50,56,61,68,71,79,82,90,96,101,104,

%T 114,118,124,130,139,142,152,155,163,168,173,179,191,194,199,205,216,

%U 219,229,232,240,249,255,258,270,275,282,287,296,299,310

%N a(n) = c([ n/2 ]) + c([ n/3 ]) + ... + c([ n/n ]) for n >=3, where a(1) = 1, a(2) = 2 and c(n) = n-th number not in sequence a( ).

%K nonn

%O 1,2

%A _Clark Kimberling_