0,2
A080224(a(n))=n and A080224(m)<>n for m<a(n).
Eric Weisstein's World of Mathematics, Abundant Number
Sequence in context: A019550 A117304 A022759 this_sequence A098242 A101425 A139406
Adjacent sequences: A091190 A091191 A091192 this_sequence A091194 A091195 A091196
nonn
Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Dec 27 2003
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