A124005 - OEIS

%I #21 Oct 08 2019 19:54:50

%S 1,4,12,54,236,1288,7092,42614,269352,1743560,11922442,80209268,

%T 562280115,3772081046

%N Number of different Othello positions 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, A124006.

%K fini,hard,nonn

%O 0,2

%A Alain Brobecker (abrobecker(AT)yahoo.com), Nov 01 2006, Dec 30 2006

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

%E a(10) from _Dominic Hofer_, Mar 28 2018

%E a(11)-a(13) from _Dominic Hofer_, Sep 28 2019