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Search: id:A114872
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| A114872 |
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Even numbers not representable as (p-1)p^k (where p is a prime and k>=0) in ascending order. |
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+0
1
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| 14, 24, 26, 34, 38, 44, 48, 50, 56, 62, 68, 74, 76, 80, 84, 86, 90, 92, 94, 98, 104, 114, 116, 118, 120, 122, 124, 132, 134, 140, 142, 144, 146, 152, 154, 158, 160, 164, 168, 170, 174, 176, 182, 184, 186, 188, 194, 200, 202, 204, 206, 208, 212, 214, 216, 218
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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It is easy to check there is no prime p with 14=(p-1)*p^k and k>=0.
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MATHEMATICA
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s = Split@ Sort@ Flatten@ Table[(Prime[n] - 1)Prime[n]^k, {n, 60}, {k, 0, 7}]; Complement[ 2Range@116, Take[Union@ Flatten@ s, {2, 58}]] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A114871.
Sequence in context: A015850 A020905 A048635 this_sequence A106699 A111455 A046290
Adjacent sequences: A114869 A114870 A114871 this_sequence A114873 A114874 A114875
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KEYWORD
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nonn
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AUTHOR
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Franz Vrabec (franz.vrabec(AT)planetuniqa.at), Jan 03 2006
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 05 2006
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