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Search: id:A032734
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| A032734 |
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a(n) cannot be prefixed or followed by any digit to form a prime. |
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+0
2
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| 2437, 5620, 7358, 11111, 13308, 13332, 13650, 14612, 19737, 19817, 24217, 25213, 26302, 27971, 28472, 28838, 29289, 29542, 29650, 31328, 33027, 33170, 35914, 35970, 36186, 37977, 38327, 39127, 39608, 40078, 41165, 41528, 42422, 43277
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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2437 prefixed or followed with a digit from (1,2,3,4,5,6,7,8,9) never yields a prime: '9'2437'1' = 7 x 37 x 43 x 83.
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CROSSREFS
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Cf. A032682-A032685 and A032702-A032733.
Sequence in context: A156120 A078868 A147984 this_sequence A083625 A035772 A107568
Adjacent sequences: A032731 A032732 A032733 this_sequence A032735 A032736 A032737
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KEYWORD
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nonn,nice,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.
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