%I A038587
%S A038587 3,6,12,12,18,21,27,27,30,36,42,42,48,48,54,54,63,69,69,
%T A038587 69,75,78,84,84,90,96,102,102,102,102,114,114,120,123,129,
%U A038587 129,135,141,141,141,144,150,156,156,168,168,174,174,174
%N A038587 Sizes of successive clusters in hexagonal lattice A_2 centered at deep 
               hole.
%C A038587 The hexagonal lattice is the familiar 2-dimensional lattice in which 
               each point has 6 neighbors. This is sometimes called the triangular 
               lattice.
%H A038587 G. Nebe and N. J. A. Sloane, <a href="http://www.research.att.com/~njas/
               lattices/A2.html">Home page for hexagonal (or triangular) lattice 
               A2</a>
%F A038587 Partial sums of A005882.
%Y A038587 Cf. A038588.
%Y A038587 Sequence in context: A119104 A102253 A081513 this_sequence A090553 A078502 
               A107974
%Y A038587 Adjacent sequences: A038584 A038585 A038586 this_sequence A038588 A038589 
               A038590
%K A038587 nonn
%O A038587 0,1
%A A038587 N. J. A. Sloane (njas(AT)research.att.com).