%I A004059 M0949
%S A004059 1,2,4,5,6,8,9,11,13,14,15,17,18,20,22,23,24,26,28,29,31,32,34,35,36
%N A004059 A density problem involving linear forms.
%C A004059 a(n) gives position of first n in A057561.
%D A004059 R. L. Graham et al., On extremal density theorems for linear forms, pp. 
               103-109 of H. Zassenhaus, editor, Number Theory and Algebra. Academic 
               Press, NY, 1977.
%D A004059 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A004059 S. R. Finch, <a href="http://algo.inria.fr/csolve/triple/">Triple-Free 
               Sets of Integers</a>
%Y A004059 Cf. A057561, A094708.
%Y A004059 Sequence in context: A000062 A047317 A099797 this_sequence A161793 A048262 
               A030326
%Y A004059 Adjacent sequences: A004056 A004057 A004058 this_sequence A004060 A004061 
               A004062
%K A004059 nonn
%O A004059 1,2
%A A004059 N. J. A. Sloane (njas(AT)research.att.com).
%E A004059 Edited by S. R. Finch (Steven.Finch(AT)inria.fr), Feb 25 2009