A175759 - OEIS

%I #7 Mar 30 2012 18:35:52

%S 1,2,4,27,33,36,42,49,55,56,63,75,84,85,91,93,99,100,102,114,119,121,

%T 132,136,141,143,152,159,171,172,183,185,201,203,213,215,217,219,228,

%U 235,242,247,255,258,265,279,282,287,289,299,301,303,319,321,322,327,339

%N Numbers n such that bigomega( n+bigomega(n) ) = bigomega(n), where bigomega = A001222.

%e 27 is in the sequence because bigomega(27) = 3 and bigomega(27 + 3) = bigomega(30) = 3.

%p with(numtheory): a := proc (n) if bigomega(n+bigomega(n)) = bigomega(n) then n else end if end proc: seq(a(n), n = 1 .. 400);

%K nonn

%O 1,2

%A _Michel Lagneau_, Aug 28 2010