A158871 - OEIS

%I #7 Mar 11 2014 01:32:28

%S 1,10,12,18,20,21,22,24,26,28,30,33,34,35,36,38,39,40,42,44,45,46,48,

%T 50,52,54,55,56,57,58,60,63,65,66,68,69,70,72,74,75,76,77,78,80,82,84,

%U 85,86,87,88,90,92,93,94,96,98,99,100,102,104,105,106,108,110,111,112,114

%N Those positive integers n where (the number of integers k, 0 <= k <= n, where the binomial coefficient C(n,k) is divisible by n) > (the number of positive integers <= n and coprime to n).

%C A020475(n) = the number of integers k, 0 <= k <= n, where the binomial coefficient C(n,k) is divisible by n.

%C A000010(n) = the number of positive integers <= n and coprime to n.

%C A020475(n) >= A000010(n) for all positive integers n.

%Y A000010, A020475

%K nonn

%O 1,2

%A _Leroy Quet_, Mar 28 2009

%E Extended by _R. J. Mathar_, May 21 2009