This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A175612 #9 Feb 10 2018 17:53:29
%S A175612 6,10,10,14,21,25,22,26,34,38,35,39,51,55,58,62,65,69,82,86,87,91,91,
%T A175612 95,111,115,115,119,118,122,119,123,129,133,141,145,142,146,155,159,
%U A175612 183,187,201,205,202,206,205,209,209,213,213,217,214,218,215,219,217,221
%N A175612 Pairs of cousin semiprimes (m, m+4).
%t A175612 SequencePosition[PrimeOmega[Range[300]], {2, _, _, _, 2}] // Flatten (* _Jean-François Alcover_, Feb 10 2018 *)
%Y A175612 Cf. A077800.
%K A175612 nonn
%O A175612 1,1
%A A175612 _Juri-Stepan Gerasimov_, Jul 24 2010
%E A175612 Edited and terms checked by _D. S. McNeil_, Nov 26 2010