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A154498 Sum of any 3 consecutive numbers is prime, a(1)=41,a(2)=43. 3

%I #4 Jun 19 2021 12:51:18

%S 41,43,47,59,61,71,79,83,89,97,107,109,131,139,149,151,157,179,211,

%T 223,227,233,241,269,277,281,349,353,359,379,433,467,499,521,523,557,

%U 577,587,613,631,743,757,769,821,827,829,883,947,967,983,1013,1087,1091

%N Sum of any 3 consecutive numbers is prime, a(1)=41,a(2)=43.

%C 41+43+47=171,...

%t a=41;b=43;lst={a,b};Do[c=Prime[n];p=a+b+c;If[PrimeQ[p],AppendTo[lst,c];a=b;b=c],{n,15,5!}];lst

%Y Cf. A154484, A154485, A154486, A154487, A154488, A154493, A154494, A154495, A154496, A062391, A154497

%K nonn

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Jan 10 2009

%E NAME adapted to offset. - _R. J. Mathar_, Jun 19 2021

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)