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Search: id:A109788
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| A109788 |
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Admirable numbers such that their abundance is < 10. |
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+0
1
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| 12, 20, 56, 70, 88, 104, 368, 464, 650, 836, 1888, 1952, 4030, 5830, 8925, 11096, 17816, 32128, 32445, 45356, 77744, 91388, 128768, 130304, 254012, 388076, 442365, 521728, 522752, 1848964, 2087936, 2291936, 8378368, 8382464, 13174976
(list; graph; listen)
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OFFSET
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1,1
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PROGRAM
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(PARI) for(n=1, 10^9, ap=sigma(n)-2*n; if(ap>0 && ap<10 && (ap%2)==0, d=ap/2; if(d!=n && (n%d)==0, print1(n", ")))) - Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 30 2008
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CROSSREFS
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Cf. A033880, A111592, A111667.
Sequence in context: A026041 A082296 A063690 this_sequence A025104 A060159 A078600
Adjacent sequences: A109785 A109786 A109787 this_sequence A109789 A109790 A109791
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KEYWORD
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nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 14 2005
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EXTENSIONS
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More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 30 2008
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