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Search: id:A105803
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| A105803 |
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Self-describing sequence: 4 composite numbers, then 6 prime numbers, then 8 composites, then 9 primes, then 11 composites, etc. |
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+0
1
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| 4, 6, 8, 9, 11, 13, 17, 19, 23, 29, 30, 32, 33, 34, 35, 36, 38, 39, 41, 43, 47, 53, 59, 61, 67, 71, 73, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86
(list; graph; listen)
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OFFSET
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4,1
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EXAMPLE
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4 6 8 9 11 13 17 19 23 29 30 32 33 34 35 36 38 39 ...
^ ^ ^ ^ -- -- -- -- -- -- ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^
...4............6....................8................................
..comp........primes.............composites
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CROSSREFS
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Adjacent sequences: A105800 A105801 A105802 this_sequence A105804 A105805 A105806
Sequence in context: A098015 A024887 A067611 this_sequence A138374 A084985 A068631
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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), May 05 2005
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