Search: id:A052160
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%I A052160
%S A052160 23,31,61,73,83,131,233,271,331,353,383,433,443,503,541,571,677,751,
%T A052160 991,1013,1033,1063,1231,1283,1291,1321,1433,1453,1493,1543,1553,1601,
%U A052160 1613,1621,1657,1777,1861,1973,1987,2011,2063,2131,2207,2333,2341,2351
%N A052160 Isolated prime difference equals 6: d(n)=p(n+1)-p(n)=6 but d(n+1) and 
               d(n-1) different from 6.
%C A052160 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.
%e A052160 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.
%Y A052160 A001223, A033451, A047948.
%Y A052160 Sequence in context: A030680 A006203 A153635 this_sequence A165985 A093014 
               A165450
%Y A052160 Adjacent sequences: A052157 A052158 A052159 this_sequence A052161 A052162 
               A052163
%K A052160 nonn
%O A052160 1,1
%A A052160 Labos E. (labos(AT)ana.sote.hu), Jan 25 2000

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