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 A091016 #10 Aug 06 2021 12:42:10 %S A091016 4,4,9,203,1333,1333,1333,2159,8309,18799,60499,60499,186779,186779, %T A091016 186779,12015573923,12015573923,6763513182767 %N A091016 a(n) is the least x such that the n values x+0, x+6, x+12, ..., x+6*(n-1) are all products of exactly two primes (i.e., semiprimes). %C A091016 a(19) > 1.e14 if it exists. - _Hugo van der Sanden_, Aug 06 2021 %e A091016 a(4)=203 because 203 = 7*29, 209 = 11*19, 215 = 5*43, 221 = 13*17. %Y A091016 Cf. A082919, A092129. Row 6 of A124570. %K A091016 nonn,fini %O A091016 1,1 %A A091016 _Don Reble_, Feb 25 2004 %E A091016 a(8) and a(9) corrected and a(18) from _Donovan Johnson_, Oct 01 2010