1,1
Cf. A127724 (k-imperfect numbers).
Adjacent sequences: A127723 A127724 A127725 this_sequence A127727 A127728 A127729
Sequence in context: A135869 A054957 A081537 this_sequence A117063 A001219 A076233
nonn
T. D. Noe (noe(AT)sspectra.com), Jan 25 2007
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