0,4
There are six ways to dissect a square into four rectangles of equal circumference, so a(4)=6.
Cf. A108066.
Adjacent sequences: A100661 A100662 A100663 this_sequence A100665 A100666 A100667
Sequence in context: A013989 A002841 A136509 this_sequence A003446 A045696 A091217
hard,nonn
Herman Beeksma (herman(AT)beeksma.nl) and Hans Riesebos (hans.riesebos(AT)wanadoo.nl), Aug 04 2005
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