login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A089956 Number of chess games that end in check (but not checkmate) after exactly n plies. 2
0, 0, 0, 12, 461, 27004, 798271, 32668081, 959129557, 35695709940, 1078854669486, 39147687661803, 1224448528652016, 44252532348552226 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..13.

F. Labelle, Statistics on chess games

Index entries for sequences related to number of chess games

CROSSREFS

Cf. A079485, A048987.

Sequence in context: A221032 A221496 A302945 * A178217 A262584 A241226

Adjacent sequences:  A089953 A089954 A089955 * A089957 A089958 A089959

KEYWORD

nonn,hard,fini

AUTHOR

François Labelle, Jan 12 2004

EXTENSIONS

a(11) from François Labelle, Jul 25 2004, who thanks Joost de Heer for providing computer time.

a(12) from François Labelle, Mar 04 2012

a(13) from François Labelle, Aug 15 2017

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 10 02:20 EDT 2020. Contains 333392 sequences. (Running on oeis4.)