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This is the Prime Pages'
interface to our BibTeX database. Rather than being an exhaustive database,
it just lists the references we cite on these pages. Please let me know of any errors you notice.References: [ Home  Author index  Key index  Search ] Item(s) in original BibTeX format@unpublished{Pinch98, author={R. Pinch}, title={Economical Numbers}, note={preprint}, year= 1998, annote={From the abstract ``We show that under a plausible hypothesis, related to the twin prime conjecture, there are arbitrarily long sequences of consecutive economical numbers, and exhibit such a sequence of length 9.'' Pinch also defines $k$frugal and $k$extravagant numbers.} } 
Another prime page by Chris K. Caldwell 