%I M2527
%S 1,3,6,9,13,17,24,30,36,42
%N Modular postage stamp problem.
%D P. Frankl et al., Projecting a finite pointset..., Ryukyu Math. J. 8 (1995), 2735.
%D R. L. Graham and N. J. A. Sloane, On Additive Bases and Harmonious Graphs, SIAM J. Algebraic and Discrete Methods, 1 (1980), 382404.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H R. L. Graham and N. J. A. Sloane, <a href="http://neilsloane.com/doc/RLG/073.pdf">On Additive Bases and Harmonious Graphs</a>
%H Sean A. Irvine, <a href="/A004131/a004131.txt">Example sets for a(2) to a(11)</a>
%K nonn
%O 2,2
%A _N. J. A. Sloane_.
%E a(11) from _Sean A. Irvine_, Dec 07 2015
