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Number of Othello positions with unique realization at the end of the n-th ply.
4

%I #33 Feb 12 2022 18:07:34

%S 1,4,12,52,228,1192,6160,33344,191380,1072232,6416600,35990544,

%T 212278256,1145811772

%N Number of Othello positions with unique realization at the end of the n-th ply.

%H Alain Brobecker, <a href="http://abrobecker.free.fr/text/othello.pdf">Othello and retrograde analysis (pdf)</a>

%H Alain Brobecker, <a href="http://abrobecker.free.fr/tools/othello.zip">programs to generate sequences</a>

%H Alain Brobecker, <a href="http://abrobecker.free.fr/tools/othello.c">othello.c</a>

%Y Cf. A124004, A124005.

%K fini,hard,more,nonn

%O 0,2

%A _Alain Brobecker_, Nov 01 2006

%E a(8)-a(9) from _Alain Brobecker_, Dec 30 2006

%E Edited by _Charles R Greathouse IV_, Oct 28 2009

%E a(10)-a(12) from _Dominic Hofer_, Sep 27 2019

%E a(13) from _Dominic Hofer_, Feb 11 2022