Search: id:A143799
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%I A143799
%S A143799 827,1049,3257,4967,11159,17207,23831,31319,31391,49391,53279,60761,
%T A143799 63647,68207,74201,78191,82007,92177,110567,110879,124247,132047,136067,
%U A143799 136601,176777,181889,204791,234977,245897,291689,343391,345887,358289
%N A143799 Lesser of Twin prime numbers of the form : i^2+j^3, as sum of square 
               and cube, if Greater Twin prime number also of the form : i^2+j^3, 
               as sum of square and cube.
%e A143799 827=22^2+7^3, 829=9^3+10^2; 1049=7^2+10^3, 1051=32^2+3^3; 3257=57^2+2^3, 
               3259=54^2+7^3;
%t A143799 lst1={};For[i=1,i<=11^3,For[j=1,j<=11^3,c=i^2+j^3;If[((PrimeQ[c]&&PrimeQ[c-2])||(PrimeQ[c]&&PrimeQ[c+2])),
               AppendTo[lst1,c]];j++ ];i++ ];lst2=Take[Union[lst1],4*10^3];lst3={};
               For[k=2,k<Length[lst2],v=Take[lst2,{k-1}][[1]];w=Take[lst2,{k}][[1]];
               x=w-v;If[x==2,AppendTo[lst3,v]];k++ ];lst3
%Y A143799 Sequence in context: A051989 A104375 A066946 this_sequence A046496 A102350 
               A108830
%Y A143799 Adjacent sequences: A143796 A143797 A143798 this_sequence A143800 A143801 
               A143802
%K A143799 nonn
%O A143799 1,1
%A A143799 Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 01 2008

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