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A172052 a(n)=abs(A171696(n)-A002822(n)). 0


%S 1,18,21,26,27,26,29,31,32,31,32,39,39,46,48,48,44,45,45,46,36,39,39,

%T 32,35,32,31,29,29,6,8,11,7,7,10,5,4,3,6,13,25,24,25,26,27,42,41,40,

%U 39,57,58,59,61,64,74,87,87,91,93,99,102,103,102,101,102,101,108,106,111,115

%N a(n)=abs(A171696(n)-A002822(n)).

%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.

%K nonn

%O 1,2

%A _Juri-Stepan Gerasimov_, Jan 24 2010

%E a(65) and terms from a(67) on corrected by _R. J. Mathar_, May 22 2010

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Last modified August 8 09:16 EDT 2020. Contains 336293 sequences. (Running on oeis4.)