trizen 098de59794 new file: oeis-research/Daniel Lignon/Composite numbers for which the harmonic mean of proper divisors is an integer/generate_special_form.sf 3 rokov pred
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prog.sf 098de59794 new file: oeis-research/Daniel Lignon/Composite numbers for which the harmonic mean of proper divisors is an integer/generate_special_form.sf 3 rokov pred