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Search: id:A052160
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| A052160 |
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Isolated prime difference equals 6: d(n)=p(n+1)-p(n)=6 but d(n+1) and d(n-1) different from 6. |
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+0
9
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| 23, 31, 61, 73, 83, 131, 233, 271, 331, 353, 383, 433, 443, 503, 541, 571, 677, 751, 991, 1013, 1033, 1063, 1231, 1283, 1291, 1321, 1433, 1453, 1493, 1543, 1553, 1601, 1613, 1621, 1657, 1777, 1861, 1973, 1987, 2011, 2063, 2131, 2207, 2333, 2341, 2351
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OFFSET
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1,1
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COMMENT
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Compare to A047948 and A033451 which initial primes of X66Y and X666Y consecutive prime difference patterns, terms of A001223. No other "islands of 6" occur in A001223: X6Y,X66Y or X666Y.
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EXAMPLE
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Consecutive primes 17,19,23,29,31 gives 2,4,6,2,.. difference patterne in which the neighboring differences of 6 are not equal to 6. Remark that terms a(n)-6 can be prime but not immediate precedent one, like 23-6=17, but prior to 19 comes before 23.
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CROSSREFS
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A001223, A033451, A047948.
Sequence in context: A030670 A030680 A006203 this_sequence A093014 A105007 A109559
Adjacent sequences: A052157 A052158 A052159 this_sequence A052161 A052162 A052163
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jan 25 2000
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