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A138394
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Smallest number with a(n) divisors is in A134865.
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3
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1, 2, 3, 4, 6, 8, 9, 10, 16, 20, 24, 30, 48, 60, 64, 72, 80, 84, 100, 108, 126, 162, 189, 192, 224, 384, 448, 512, 576, 672, 11520
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OFFSET
| 1,2
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COMMENTS
| The indices of elements of A005179 that belong to A134865. Sorted version of the sequence A140752. - Max Alekseyev (maxale(AT)gmail.com), May 26 2008
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FORMULA
| a(n) = A000005(A140753(n)) - Max Alekseyev (maxale(AT)gmail.com), May 26 2008
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EXAMPLE
| 8 is in this sequence because the smallest number with 8 divisors (24) is a member of A134865.
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CROSSREFS
| Cf. A000005, A005179, A134865, A140752, A140753.
Sequence in context: A158614 A117925 A135571 * A140752 A191983 A055562
Adjacent sequences: A138391 A138392 A138393 * A138395 A138396 A138397
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KEYWORD
| more,nonn
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AUTHOR
| J. Lowell (jhbubby(AT)mindspring.com), May 08 2008
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EXTENSIONS
| a(31)=11520 from Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 30 2008
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