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 A115394 #8 May 19 2019 20:37:36
%S A115394 33,34,35,85,86,87,93,94,95,121,122,123,141,142,143,201,202,203,213,
%T A115394 214,215,217,218,219,301,302,303,393,394,395,445,446,447,633,634,635,
%U A115394 697,698,699,841,842,843,921,922,923,1041,1042,1043,1137,1138,1139,1261
%N A115394 List of triples of semiprimes: each three numbers are consecutive semiprimes.
%F A115394 a(3n-2) = A056809(n), a(3n-1) = A086005(n), a(3n) = A086005(n) + 1 = 2*A086006(n) + 1, n=1,2,...
%t A115394 Flatten[Select[Partition[Union[Times@@@Tuples[Prime[Range[150]],{2}]],3,1],#[[3]]-#[[2]]==#[[2]]-#[[1]]==1&]] (* _Harvey P. Dale_, Jan 22 2011 *)
%Y A115394 Cf. A056809, A086005, A086006.
%K A115394 nonn
%O A115394 1,1
%A A115394 _Zak Seidov_, Mar 08 2006