%I A090340
%S A090340 2,1,1,1,0,2,1,0,1,4,4,6,4,1,0,9,9,11,10,1,3,10,14,1,5,6,2,18,19,21,
%T A090340 21,4,5,7,2,27,16,5,5,30,29,31,28,4,14,22,36,3,2,8,3,36,42,5,3,9,9,28,
               47,
%U A090340 49,28,20,1,6,2,51,46,5,12,57,59,61,34,26,10,5,0,61,66,1,31,40,69,8,23,
               13
%V A090340 -2,-1,-1,-1,0,-2,1,0,-1,-4,4,-6,4,1,0,-9,9,-11,10,-1,-3,-10,14,-1,-5,
               6,-2,-18,19,-21,
%W A090340 21,-4,-5,7,2,-27,16,5,5,-30,29,-31,28,4,-14,-22,36,-3,2,-8,3,-36,42,-5,
               3,-9,-9,-28,47,
%X A090340 -49,28,20,1,-6,2,-51,46,-5,12,-57,59,-61,34,26,-10,5,0,-61,66,1,-31,-40,
               69,-8,-23,13
%N A090340 Difference between the sums of the prime factors, including multiplicity, 
               of n and those of n + 1.
%e A090340 a(24)=-1 because 24=2*2*2*3, 25=5*5 and (2+2+2+3)-(5+5)=-1.
%Y A090340 Cf. A090341, A090342, A090343.
%Y A090340 Sequence in context: A064744 A135997 A026609 this_sequence A117162 A146061 
               A135936
%Y A090340 Adjacent sequences: A090337 A090338 A090339 this_sequence A090341 A090342 
               A090343
%K A090340 sign
%O A090340 1,1
%A A090340 Charles K. Layman (cklayman(AT)juno.com), Nov 25 2003