%I A112880
%S A112880 12,18,492,702,2310,2370,130650,980910,5528418,21357012
%N A112880 Sequence k(n) such that: define a(0)=3 then a(n)=k(n)*a(n-1)^2-1=least 
               prime first of twin primes.
%C A112880 Prime sequence in A112879
%e A112880 12*3^2-1=107, 107 and 109 twin primes so k(1)=12
%e A112880 18*107^2-1=206081, 206081 and 206083 twin primes so k(2)=18
%Y A112880 Cf. A112879.
%Y A112880 Sequence in context: A166627 A018957 A110932 this_sequence A100541 A056688 
               A107911
%Y A112880 Adjacent sequences: A112877 A112878 A112879 this_sequence A112881 A112882 
               A112883
%K A112880 hard,nonn
%O A112880 1,1
%A A112880 Pierre CAMI (pierrecami(AT)tele2.fr), Oct 01 2005