%I A097469
%S A097469 1,3,3,8,5,1,5,1,5,1,9,7,6,1,5,0,0,2,4,6,5,7,3,9,0,4,7,0,3,1,7,3,0,3,7,
%T A097469 8,6,1,8,0,8,1,0,9,3,0,8,6,5,2,3,9,6,3,4,3,5,7,6,3,2,0,6,0,5,2,7,6,9,7,
%U A097469 6,2,9,7,3,2,1,4,4,9,1,3,8,9,1,9,3,8,5,8,0,7,9,4,9
%N A097469 Decimal expansion of growth constant C for dimer model on square grid.
%D A097469 P. W. Kasteleyn, The statistics of dimers on a lattice. I: The number 
               of dimer arrangements on a quadratic lattice, Physica 27 (1961) 1209-1225.
%H A097469 J. Propp, Enumeration of matchings: problems and progress, in <a href="http:/
               /www.msri.org/publications/books/Book38/contents.html">New Perspectives 
               in Algebraic Combinatorics</a>
%H A097469 F. Ardila and R. P. Stanley, <a href="http://arXiv.org/abs/math.CO/0501170">
               Tilings</a>
%F A097469 e^(G/pi), with G = A006752 (Catalan's constant).
%e A097469 1.33851515197615...
%Y A097469 Cf. A038758, A054344.
%Y A097469 Sequence in context: A143615 A016606 A069462 this_sequence A105342 A021751 
               A093366
%Y A097469 Adjacent sequences: A097466 A097467 A097468 this_sequence A097470 A097471 
               A097472
%K A097469 cons,nonn
%O A097469 1,2
%A A097469 Ralf Stephan (ralf(AT)ark.in-berlin.de), Sep 18 2004