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Search: id:A110615
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| A110615 |
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Minimal set of composite-strings in base 12 in the sense of A071070. |
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+0
4
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| 4, 6, 8, 9, 10, 12, 14, 15, 24, 25, 26, 27, 35, 36, 38, 39, 60, 62, 63, 65, 84, 85, 86, 87, 91, 95, 132, 133, 134, 135, 143, 161, 205, 215, 355, 377, 445, 451, 455, 493, 1651, 1673, 1885, 1891, 1895, 8797
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Maple worksheet available upon request. Here is the sequence of minimal composites in base 12, where X is 10 and E is 11. 4, 6, 8, 9, X, 10, 12, 13, 20, 21, 22, 23, 2E, 30, 32, 33, 50, 52, 53, 55, 70, 71, 72, 73, 77, 7E, E0, E1, E2, E3, EE, 115, 151, 15E, 257, 275, 311, 317, 31E, 351, E57, E75, 1111, 1117, 111E, 5111.
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EXAMPLE
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a(13)=35=2E since no earlier composite is of the form "*2*E*". The list of minimal composites can be constructed using a sieve-like process: subsequently eliminate from the list of composites all composites of the form "*2*E*". Assuming all previous terms have been similarly determined, then the next remaining composite should be 30.
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CROSSREFS
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Cf. A071062, A071070.
Sequence in context: A063989 A117097 A077135 this_sequence A060679 A051234 A102554
Adjacent sequences: A110612 A110613 A110614 this_sequence A110616 A110617 A110618
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KEYWORD
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nonn
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AUTHOR
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Walter A. Kehowski (wkehowski(AT)cox.net), Sep 14 2005; name corrected Sep 18 2005
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