%I A070963
%S A070963 2,1,2,0,4,2,0,2,6,4,6,4,6,10,2,2,12,10,2,8,2,4,8,4,16,8,10,8,10,8,8,14,
%T A070963 14,26,26,14,36,42,20,22,68,66,60,14,10,60,40,74,38,66,10,134,44,98,64,
%U A070963 54,22,156,20,18,34,240,10,256,32,18,6,144,72,226,70,68,50,184,58,236,
               82
%V A070963 2,1,2,0,4,-2,0,2,6,-4,6,-4,-6,10,2,-2,12,-10,-2,8,2,-4,8,4,-16,8,10,-8,
               10,-8,-8,14,
%W A070963 14,-26,26,-14,-36,42,20,-22,68,-66,-60,14,-10,60,40,-74,-38,-66,10,134,
               44,-98,-64,
%X A070963 -54,22,156,20,-18,-34,-240,10,256,32,-18,-6,-144,-72,226,70,-68,-50,-184,
               58,236,82
%N A070963 a(1) = 2; for n >= 2, n = sum{1<=k<n, GCD(k,n)=1} a(k).
%H A070963 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%e A070963 12 = a(1) + a(5) + a(7) + a(11) = 2 + 4 + 0 + 6 because 1, 5, 7 and 11 
               are the positive integers < 12 and relatively prime to 12.
%Y A070963 Sequence in context: A132456 A080966 A023895 this_sequence A139158 A055135 
               A121310
%Y A070963 Adjacent sequences: A070960 A070961 A070962 this_sequence A070964 A070965 
               A070966
%K A070963 sign
%O A070963 1,1
%A A070963 Leroy Quet, May 16 2002