%I A003403 M1049
%S A003403 1,1,2,4,7,11,18,27,41,60,87,122,172,235,320,430,572,751,982,1268,
%T A003403 1629,2074,2625,3297,4123,5118,6324,7771,9506,11567,14023,16917,20335
%N A003403 Certain triangular arrays of integers.
%D A003403 J. C. P. Miller, On the enumeration of partially ordered sets of integers, 
               pp. 109-124 of T. P. McDonough and V. C. Mavron, editors, Combinatorics: 
               Proceedings of the Fourth British Combinatorial Conference 1973. 
               London Mathematical Society, Lecture Note Series, Number 13, Cambridge 
               University Press, NY, 1974.
%D A003403 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A003403 Sequence in context: A129929 A073738 A137631 this_sequence A034412 A054352 
               A091838
%Y A003403 Adjacent sequences: A003400 A003401 A003402 this_sequence A003404 A003405 
               A003406
%K A003403 nonn
%O A003403 0,3
%A A003403 N. J. A. Sloane (njas(AT)research.att.com).