%I A006494
%S A006494 1,20,400,8902,197281,4865617,119060679,3195913043,84999425906,
%T A006494 2439540533153,69353270203366,2097660204806910
%N A006494 Number of possible chess games at the end of the n-th plie plus number 
               of games that terminate (i.e. mate) in fewer than n plies.
%C A006494 This sequence is A048987 plus the cumulative sum of A079485. - Richard 
               Bean (rwb(AT)eskimo.com), Jun 18 2003
%D A006494 James Gleick, Faster, Vintage Books, NY, 2000 (see pp. 259-261).
%H A006494 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Chess.html">Link to a section of The World of Mathematics.</a>
%H A006494 <a href="Sindx_Ch.html#chess">Index entries for sequences related to 
               number of chess games</a>
%Y A006494 Cf. A048987, A079485.
%Y A006494 Sequence in context: A009964 A007577 A048987 this_sequence A007545 A055476 
               A041181
%Y A006494 Adjacent sequences: A006491 A006492 A006493 this_sequence A006495 A006496 
               A006497
%K A006494 nonn,hard,nice
%O A006494 0,2
%A A006494 Ken Thompson (ken(AT)plan9.bell-labs.com)
%E A006494 Three more terms from Francois Labelle (flab(AT)cs.berkeley.edu), Jan 
               22 2004
%E A006494 a(11) from Francois Labelle (flab(AT)cs.berkeley.edu), Jul 25 2004, who 
               thanks Joost de Heer for providing computer time.