| 12, 23, 31, 34, 41, 42, 45, 51, 52, 53, 56, 61, 62, 63, 64, 67, 71, 72, 73, 74, 75, 78, 81, 82, 83, 84, 85, 86, 89, 91, 92, 93, 94, 95, 96, 97, 98, 101, 111, 113, 121, 122, 123, 131, 141, 151, 161, 171, 181, 191, 192, 201, 202, 210, 211, 212, 213, 214, 215, 216, 217
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A105390(n) = number of terms <= n; for n < 740: A105390(n) < n/2. - Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Apr 04 2005
A116700 is a similar sequence. Note that 21 is missing from the current sequence, because we deleted 12 in computing A048991, and now 21 is no longer "earlier in the sequence". On the other hand 21 is present in A116700. - njas, Aug 05 2007
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..10000
Nick Hobson, Python program for this sequence
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CROSSREFS
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Sequence in context: A066458 A101104 A114455 this_sequence A088783 A029756 A104340
Adjacent sequences: A048989 A048990 A048991 this_sequence A048993 A048994 A048995
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KEYWORD
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nonn,nice,base,easy
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AUTHOR
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Bernardo Recaman (ignotus(AT)hotmail.com)
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EXTENSIONS
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Edited by Patrick De Geest, Jun 02 2003
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