Search: id:A106155
Results 1-1 of 1 results found.

%I A106155
%S A106155 3,4,5,6,7,10,12,13,19,26,28,41,66,73,76,78,85,371,437,513,661,726,924,
%T A106155 1063,1331,1380,1422,1602,1947,1963
%N A106155 Numbers n>2 such that p(n)# + (p(n+1))^2 or p(n+1)# - (p(n+2))^2 is prime 
               or both are primes.
%e A106155 2*3*5 + 7*7 = 79 prime as 2*3*5*7 - 11*11 = 89 prime so a(1)=3
%e A106155 2*3*5*7 + 11*11 = 331 prime as 2*3*5*7*11 -13*13 = 2141 prime so a(2)=4
%e A106155 2*3*5*7*11 + 13*13 = 2479 = 37*67 composite
%e A106155 2*3*5*7*11*13 - 17*17 = 29471 prime so a(3)=5
%Y A106155 Sequence in context: A112874 A159973 A158008 this_sequence A087190 A085038 
               A163078
%Y A106155 Adjacent sequences: A106152 A106153 A106154 this_sequence A106156 A106157 
               A106158
%K A106155 more,nonn
%O A106155 1,1
%A A106155 Pierre CAMI (pierrecami(AT)tele2.fr), May 08 2005
%E A106155 a(20)-a(30) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Apr 
               27 2008

Search completed in 0.001 seconds