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Number of inequivalent ways to dissect a square into n rectangles of equal perimeter.

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`%I #19 Oct 31 2014 17:03:26
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`%S 1,1,2,6,16,50,177,664,2532,9785
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`%N Number of inequivalent ways to dissect a square into n rectangles of equal perimeter.
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`%C Dissections differing only by rotations and/or reflections are not counted as distinct. - _N. J. A. Sloane_, Dec 06 2012
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`%H Johan Nilsson, <a href="/A100664/a100664.pdf">Illustrations of terms up to a(6).</a>
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`%e There are six ways to dissect a square into four rectangles of equal perimeter, so a(4)=6.
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`%Y Cf. A108066.
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`%K hard,more,nonn
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`%O 1,3
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`%A _Herman Beeksma_ and Hans Riesebos (hans.riesebos(AT)wanadoo.nl), Aug 04 2005
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