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The lower limit of a(n) is A165906(n). The rectangle area, p(n) X a(n), is bounded by A007504.
Table of n, a(n) for n=1..20.
L. Manor, Illustration of terms 1-4
Cf. A165906, A007504
Sequence in context: A067434 A177357 A165906 * A104103 A194964 A029923
Adjacent sequences: A165904 A165905 A165906 * A165908 A165909 A165910
Lior Manor, Sep 30 2009