OFFSET
0,2
COMMENTS
Gives the number of possible chess games where both sides start without queens, rooks, knights, and bishops.
Does not include games which end in fewer than n plies.
Initial terms computed using the Chesspresso engine.
LINKS
Bernhard Seybold, Chesspresso.
EXAMPLE
a(1) = 18 since each pawn can move forward 1 or 2 squares (16 moves) or the king can move left or right (2 moves).
CROSSREFS
KEYWORD
nonn,hard,more,fini
AUTHOR
Sean A. Irvine, Apr 28 2017
EXTENSIONS
a(10) from Sean A. Irvine, May 04 2017
STATUS
approved