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A103643
Number of tilings of a special lattice of order n.
0
1, 2, 6, 6, 6, 6, 27, 486, 486, 486, 486, 6561, 531441, 531441, 531441, 531441, 43046721, 10460353203, 10460353203, 10460353203, 10460353203, 7625597484987, 5559060566555523, 5559060566555523, 5559060566555523
OFFSET
0,2
LINKS
M. Ciucu, Perfect matchings and perfect powers, arXiv:math/0501521 [math.CO], 2005.
FORMULA
Recurrence: a(n+30) = 3^(4f(n))*a(n), with f a 5-periodic function.
CROSSREFS
Sequence in context: A278253 A294961 A048765 * A079892 A096014 A071888
KEYWORD
nonn
AUTHOR
Ralf Stephan, Feb 19 2005
STATUS
approved