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%I #3 Dec 05 2013 19:56:02
%S 1,3,5,9,9,19,13,21,20,31,21,43,25,43,41,45,33,67,37,67,55,67,45,91,
%T 54,79,65,89,57,137,61,93,85,103,83,139,73,115,100,137,81,185,85,137,
%U 127,139,93,187,104,171,130,161,105,211,128,183,145,175,117,281,121,187,170
%N In the following triangle the n-th row begins with n and contains n-1 smallest numbers coprime to n and greater than n. Sequence gives the leading diagonal.
%C 1
%C 2 3
%C 3 4 5
%C 4 5 7 9
%C 5 6 7 8 9
%C 6 7 11 13 17 19
%C 7 8 9 10 11 12 13
%C 8 9 11 13 15 17 19 21
%o (PARI) for(k=1,100,s=k+1;i=k+1;while(i<k+(k),if(gcd(s,k)==1,i++);s++);print1(s-1,",")) - Lambert Herrgesell (zero815(AT)googlemail.com), Mar 14 2006
%Y Cf. A081501.
%K nonn
%O 1,2
%A _Amarnath Murthy_, Mar 25 2003
%E More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Mar 14 2006
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