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A102784
In chess, the number of "at home" dual-free proof games in n plies.
1
1, 0, 0, 0, 0, 0, 0, 0, 10, 41, 116, 335, 1111, 2619, 6067, 12788, 26692
OFFSET
0,9
COMMENTS
Among all the proof game problems counted in A090051, this is the number of problems where all the surviving pieces are apparently on their start squares.
CROSSREFS
Cf. A090051.
Sequence in context: A266396 A006323 A178073 * A294604 A061003 A211064
KEYWORD
hard,nonn,fini
AUTHOR
François Labelle, Feb 11 2005
EXTENSIONS
a(15)-a(16) from François Labelle, Apr 01 2015
STATUS
approved