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Search: id:A104138
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| A104138 |
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Smallest prime followed by n or more composites. |
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+0
1
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| 2, 3, 7, 7, 23, 23, 89, 89, 113, 113, 113, 113, 113, 113, 523, 523, 523, 523, 887, 887, 1129, 1129, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 1327, 9551, 9551, 15683, 15683, 15683, 15683, 15683, 15683, 15683, 15683, 19609
(list; graph; listen)
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OFFSET
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0,1
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FORMULA
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Record prime A002386(n+1) appears A053695(n-1) times, for n>1.
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EXAMPLE
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a(10)=113 because it is the first prime occurring before primes 199,211,293,317,467,509,... all followed by at least ten successive composites.
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CROSSREFS
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Cf. A002386, A005250, A053695.
Adjacent sequences: A104135 A104136 A104137 this_sequence A104139 A104140 A104141
Sequence in context: A104955 A011161 A027672 this_sequence A083809 A092967 A056431
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KEYWORD
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nonn
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Mar 07 2005
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