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Search: id:A110443
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| A110443 |
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Index k of the colossally abundant number c=A004490(k) with sigma(c)/c >= n. |
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+0
2
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| 2, 5, 9, 14, 19, 27, 40, 56, 82, 119, 180, 275, 426, 673, 1072, 1728, 2807, 4596, 7558, 12497, 20741, 34544, 57704, 96638, 162204, 272802, 459637, 775678, 1310959, 2218651, 3759507, 6377858
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OFFSET
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2,1
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COMMENT
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For the numbers, instead of the indices, see A110442. The last term, a(33), yields a 48361012-digit number having 6375908 prime factors.
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EXAMPLE
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a(4)=9 because the 9th colossally abundant number is c=55440 and sigma(c)/c=4.18701.
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CROSSREFS
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Sequence in context: A025281 A160663 A024201 this_sequence A130029 A132296 A112265
Adjacent sequences: A110440 A110441 A110442 this_sequence A110444 A110445 A110446
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KEYWORD
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nonn
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), Jul 20 2005
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