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%I #5 Jun 20 2021 09:40:19
%S 12,18,492,702,2310,2370,130650,980910,5528418,21357012
%N The factors k(n) such that the twin-prime subsequence A112879 is obtained.
%e 12*3^2-1=107, 107 and 109 twin primes so k(1)=12
%e 18*107^2-1=206081, 206081 and 206083 twin primes so k(2)=18
%Y Cf. A112879.
%K hard,nonn
%O 1,1
%A _Pierre CAMI_, Oct 01 2005
%E Removed misleading mention of a(n) in NAME. - _R. J. Mathar_, Jun 20 2021
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