A093937 - OEIS

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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.

1

8, 5383, 273976272, 1043065776718923, 296755610108278480324496, 6311874633104458029014418062576427, 10042431607269542604521005988830015956735912072, 1195803046003221669232199949110252888466561872833354476549925

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

N. Destainville, R. Mosseri and F. Bailly, A formula for the number of tilings of an octagon by rhombi, arXiv:math/0302105 [math.CO], 2003-2004.

CROSSREFS

Sequence in context: A029736 A206460 A340890 * A318897 A178329 A062030

Adjacent sequences: A093934 A093935 A093936 * A093938 A093939 A093940

KEYWORD

nonn,hard

AUTHOR

Ralf Stephan, May 23 2004

EXTENSIONS

More terms from Maxwell Hutchinson, Dec 23 2010

STATUS

approved