Abstract
The number of independent self-avoiding walk (SAW) loop configurations (CN) for fixed perimeter length N on the square lattice is fitted here to the scaling form CN approximately mu NNh, for SAWS with various constraints. For two-choice SAWS, extrapolation of enumeration results gives h=-1.5+or-0.1 (which falls in the same universality class as ordinary SAWS) and exact calculations for spiral SAWS give h=3.

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