login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A006494 Number of possible chess games at the end of the n-th ply plus number of games that terminate (i.e., mate) in fewer than n plies. 6

%I

%S 1,20,400,8902,197281,4865617,119060679,3195913043,84999425906,

%T 2439540533153,69353270203366,2097660204806910,62855340727822758,

%U 1981075507583376209

%N Number of possible chess games at the end of the n-th ply plus number of games that terminate (i.e., mate) in fewer than n plies.

%C This sequence is A048987 plus the cumulative sum of A079485. - Richard Bean (rwb(AT)eskimo.com), Jun 18 2003

%D James Gleick, Faster, Vintage Books, NY, 2000 (see pp. 259-261).

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Chess.html">Chess</a>

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

%Y Cf. A048987, A079485.

%K nonn,hard,nice,fini

%O 0,2

%A Ken Thompson (ken(AT)google.com)

%E a(8)-a(10) from _François Labelle_, Jan 22 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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 18 15:08 EST 2018. Contains 299324 sequences. (Running on oeis4.)