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Search: id:A032738
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| A032738 |
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a(n) cannot be prefixed or followed by any digit to form a prime ('empty' pre- and postfixes allowed). |
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+0
1
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| 14612, 27971, 33170, 36186, 39608, 40078, 41165, 41528, 47382, 55553, 60806, 62318, 63056, 65970, 66818, 70558, 83986, 86145, 89072, 89280, 91538, 93160, 96222, 97908, 101532, 102852, 104609, 105275, 108312, 108615, 108792, 109934
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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a(n) itself cannot be a prime to start with.
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EXAMPLE
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104609 prefixed or followed by a digit from ('',1,2,3,4,5,6,7,8,9) never yields a prime: '_'104609'_' = 73 x 1433; '8'104609'3' = 3089 x 26237.
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CROSSREFS
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Cf. A032682-A032685 and A032702-A032733.
Sequence in context: A076165 A153428 A032736 this_sequence A133858 A023683 A017284
Adjacent sequences: A032735 A032736 A032737 this_sequence A032739 A032740 A032741
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.
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