%C Abs(n-th nonnegative number such that neither 6*k+-1 is prime minus n-th number such that 6*m+-1 are both twin primes).
%Y Cf. A002808, A171696.
%A _Juri-Stepan Gerasimov_, Jan 24 2010
%E a(65) and terms from a(67) on corrected by _R. J. Mathar_, May 22 2010