Search: id:A036570
Results 1-1 of 1 results found.

%I A036570
%S A036570 13,37,157,541,877,1201,1381,1621,2017,2557,2857,3061,4357,4441,
%T A036570 5077,5581,5701,6337,6637,6661,6997,7417,8221,9181,9661,9901,10837,
%U A036570 11497,12457,12601,12721,12757,13681,14437,15241,16921,17077,18217
%N A036570 Primes p such that (p+1)/2 and (p+2)/3 are also prime.
%C A036570 The prime p is followed by two semiprimes; a third semiprime is not possible. 
               - T. D. Noe, Jul 23 2008
%H A036570 T. D. Noe, <a href="b036570.txt">Table of n, a(n) for n=1..1000</a>
%t A036570 lst={};Do[p=Prime[n];If[PrimeQ[(p+1)/2]&&PrimeQ[(p+2)/3],AppendTo[lst,
               p]],{n,8!}];lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), 
               Jul 31 2009]
%Y A036570 Cf. A147615.
%Y A036570 Sequence in context: A155297 A155903 A139860 this_sequence A147615 A155241 
               A155222
%Y A036570 Adjacent sequences: A036567 A036568 A036569 this_sequence A036571 A036572 
               A036573
%K A036570 nonn
%O A036570 1,1
%A A036570 N. J. A. Sloane (njas(AT)research.att.com).

Search completed in 0.001 seconds