%I A001598 M2244 N0891
%S A001598 1,1,3,2,5,5,4,2,9,5,8,5,13,12,8,5,17,8,6,11,14,11,23,7,23,26,11,16,
%T A001598 14,15,31,10,28,16,24,15,37,9,39,16,20,27,20,31,14,43,47,23,32,20,51,17
%N A001598 Number of terms in {b(1)..b(n)} relatively prime to b(n), where b(n) 
               = A001597(n).
%D A001598 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001598 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001598 H. W. Gould, Problem H-170, Fib. Quart., 8 (1970), 268.
%Y A001598 Sequence in context: A132778 A127703 A127738 this_sequence A141297 A059319 
               A019828
%Y A001598 Adjacent sequences: A001595 A001596 A001597 this_sequence A001599 A001600 
               A001601
%K A001598 nonn,easy
%O A001598 1,3
%A A001598 N. J. A. Sloane (njas(AT)research.att.com).