%I #9 Apr 29 2018 12:49:22
%S 0,1,2,0,3,1,5,0,0,1,8,-2,10,3,2,-8,13,-4,15,-3,2,5,19,-7,0,5,-6,-4,
%T 24,-5,26,-15,4,9,2,-14,31,9,4,-13,35,-6,37,-3,-7,13,41,-19,0,-9,6,-4,
%U 46,-17,2,-15,8,17,52,-16,54,19,-8,-36,2,-8,59,-3,10,-10,63,-28,65,23,-11
%N a(n) = sopfr(n) - (floor(sqrt(n))*bigomega(n)).
%e Take the number 287. Find the floor of its square root: sqrt(287)=16.941074... it's 16. Now get the factors of 287 = 7*41. Subtract the first prime factor from the floor of the square root: 7-16 = -9. Now subtract the second prime factor from the floor of the square root: 41-16 = 25. Add those values together: -9+25 = 16. It's the same as the floor of the square root. But it doesn't always work out that way.
%K easy,sign
%O 1,3
%A _Jason Earls_, Sep 23 2010