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A221840
Number of sets of n squares providing dissections of a square.
1
1, 0, 0, 1, 0, 1, 1, 2, 4, 7
OFFSET
1,8
COMMENTS
It seems that a(11) = 16 and a(12) = 30. [Vladimir Letsko, Sep 17 2013]
EXAMPLE
a(8) = 2 as there are two sets of 8 squares which tile a unit square, namely {1(0.75X0.75), 7(0.25X0.25)} and {1(0.6X0.6), 3(0.4X0.4), 4(0.2X0.2)}.
CROSSREFS
Sequence in context: A090315 A083753 A170807 * A111512 A283509 A111768
KEYWORD
nonn,more
AUTHOR
Geoffrey H. Morley, Jan 26 2013
EXTENSIONS
a(10) corrected by Geoffrey H. Morley, Aug 02 2013
STATUS
approved