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Search: id:A114318
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| A114318 |
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Self-describing sequence. See the sequence as a succession of digits: then a(n) is the position of a composite digit in the sequence. |
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+0
1
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| 2, 4, 5, 6, 8, 9, 14, 40, 50, 54, 55, 57, 70, 71, 72, 73, 75, 77, 100, 101, 102, 400, 500, 501, 540, 554, 604, 700, 701, 702, 703, 844, 854, 1400, 1500, 1501, 1502, 1503, 1505, 4440, 5000, 5001, 5002, 5003, 5005, 5007, 5010, 5011, 5012, 5013, 5015, 5017, 5020
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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"Composite" digits are : 4, 6, 8 and 9.
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LINKS
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Diana Mecum, Table of n, a(n) for n=1,...,148
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EXAMPLE
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Composite digits are between brackets:
Sequence: 2,(4),5,(6),(8),(9),1(4),(4)0,50,5(4),55...
Digit pos: 2nd 4th 5th 6th 8th 9th 14th ... = sequence itself.
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CROSSREFS
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Sequence in context: A030326 A080086 A015844 this_sequence A035500 A080653 A115836
Adjacent sequences: A114315 A114316 A114317 this_sequence A114319 A114320 A114321
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KEYWORD
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base,easy,nonn
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AUTHOR
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Eric Angelini (eric.angelini(AT)kntv.be), Feb 05 2006
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EXTENSIONS
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Added terms a(28) - a(148). - Diana Mecum (diana.mecum(AT)gmail.com), Dec 30 2008
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