Search: id:A051770
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%I A051770
%S A051770 4,11,54,69,77,89,91,155,173,199,202,202,208,218,245,272,286,293,293,
%T A051770 323,324,347,368,370,373,379,413,489,512,514,533,549,552,558,637,650,
%U A051770 674,731,749,759,771,773,782,783,787,811,849,850,883,896,902,927,937
%N A051770 Numbers n such that there exists a binomial coefficient C(n,k) where 
               C(n,k)-1 and C(n,k)+1 are twin primes and 2<=k<=floor(n/2).
%C A051770 The integer 202 occurs twice because both C(202,34) and C(202,69) yield 
               twin prime pairs.
%H A051770 <a href="http://science.kennesaw.edu/~jdemaio/twinbc.htm">Source</a>
%e A051770 The integer 11 is a member of the sequence because C(11,5)=462 and 461 
               and 463 are twin primes.
%Y A051770 A051735, A051771.
%Y A051770 Sequence in context: A149316 A149317 A027042 this_sequence A032181 A081073 
               A002831
%Y A051770 Adjacent sequences: A051767 A051768 A051769 this_sequence A051771 A051772 
               A051773
%K A051770 nonn
%O A051770 1,1
%A A051770 Joe DeMaio (jdemaio(AT)kennesaw.edu), Dec 08 1999

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