Search: id:A159049
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%I A159049
%S A159049 5,11,41,71,83,281,383,1181,1601,2351,2633,3491,3833,4283,5783,6221,
%T A159049 6791,8783,10301,10883,11633,12251,14033,15581,18341,26111,26801,30881,
%U A159049 31883,34721,38231,41333,41621,42491,43961,46061,47591,53633,60383
%N A159049 Primes of the form (5+ a triangular number A000217).
%e A159049 11 is in the list because it is A000217(3)+5 and a prime. 41=36+5= A000217(8)+5 
               is a prime. 71=66+5=A000217(11)+5 is a prime.
%t A159049 s=0;lst={};Do[s+=n;p=s+5;If[PrimeQ[p],AppendTo[lst,p]],{n,0,7!}];lst
%Y A159049 Cf. A055469, A055472, A159047, A159048
%Y A159049 Sequence in context: A089441 A046121 A023271 this_sequence A047976 A006382 
               A055113
%Y A159049 Adjacent sequences: A159046 A159047 A159048 this_sequence A159050 A159051 
               A159052
%K A159049 nonn,easy
%O A159049 1,1
%A A159049 Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 03 2009
%E A159049 Definition rephrased, R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 
               05 2009

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