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Search: id:A089686
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| A089686 |
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a={1,3,7,9} b[n]=Prime[n]*10+a[[4-Mod[n,4]]] c(m) =if b[n] is prime then b[n] |
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| 79, 199, 293, 311, 379, 433, 613, 719, 977, 1013, 1031, 1097, 1319, 1993, 2111, 2239, 2293, 2399, 2417, 2713, 2819, 2837, 3119, 3137, 3677, 3733, 4099, 4339, 4397, 4799, 4877, 5039, 5231, 5419, 5477, 5573, 5717, 5939, 6311, 6473, 6599, 6733, 6917, 7013
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Reverse digit set function that produces a prime sequence.
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MATHEMATICA
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a={1, 3, 7, 9} digits=3*200 b=Table[Prime[n]*10+a[[4-Mod[n, 4]]], {n, 1, digits}] c=Table[If[PrimeQ[b[[n]]]==True, b[[n]], 0], {n, 1, digits}] d=Delete[Union[c], 1]
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CROSSREFS
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Sequence in context: A142678 A142747 A142198 this_sequence A141964 A142285 A076815
Adjacent sequences: A089683 A089684 A089685 this_sequence A089687 A089688 A089689
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KEYWORD
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nonn
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Jan 05 2004
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