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Number of chess games that end in check (but not checkmate) after exactly n plies.
1

%I #20 Aug 16 2017 04:24:36

%S 0,0,0,12,461,27004,798271,32668081,959129557,35695709940,

%T 1078854669486,39147687661803,1224448528652016,44252532348552226

%N Number of chess games that end in check (but not checkmate) after exactly n plies.

%H F. Labelle, <a href="http://www.cs.berkeley.edu/~flab/chess/statistics-games.html">Statistics on chess games</a>

%H <a href="/index/Ch#chess">Index entries for sequences related to number of chess games</a>

%Y Cf. A079485, A048987.

%K nonn,hard,fini

%O 0,4

%A _François Labelle_, Jan 12 2004

%E a(11) from _François Labelle_, Jul 25 2004, who thanks Joost de Heer for providing computer time.

%E a(12) from _François Labelle_, Mar 04 2012

%E a(13) from _François Labelle_, Aug 15 2017