A093937 - OEIS

A093937

Number of tilings of a centro-symmetric octagon of integral sides, all of length n, into squares and 45-degree rhombi with unitary side lengths.

%I #14 Nov 25 2018 12:08:43

%S 8,5383,273976272,1043065776718923,296755610108278480324496,

%T 6311874633104458029014418062576427,

%U 10042431607269542604521005988830015956735912072,1195803046003221669232199949110252888466561872833354476549925

%N Number of tilings of a centro-symmetric octagon of integral sides, all of length n, into squares and 45-degree rhombi with unitary side lengths.

%H N. Destainville, R. Mosseri and F. Bailly, <a href="http://arXiv.org/abs/math.CO/0302105">A formula for the number of tilings of an octagon by rhombi</a>, arXiv:math/0302105 [math.CO], 2003-2004.

%K nonn,hard

%O 1,1

%A _Ralf Stephan_, May 23 2004

%E More terms from _Maxwell Hutchinson_, Dec 23 2010