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A089956 Number of chess games that end in check (but not checkmate) after exactly n plies. 1
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
CROSSREFS
Sequence in context: A221032 A221496 A302945 * A178217 A262584 A350154
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

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Last modified April 16 12:05 EDT 2024. Contains 371711 sequences. (Running on oeis4.)