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 A121039 #13 Feb 12 2017 21:53:17
%S A121039 19,190,1197,1900,1919,1938,1957,1976,1995,3192,3819,4199,5719,6194,
%T A121039 7619,9196,9519,11191,11419,11913,11932,11951,11970,11989,12198,13319,
%U A121039 14193,15219,17119,17195,19000,19019,19038,19057,19076,19095,19114
%N A121039 Multiples of 19 containing a 19 in their decimal representation.
%H A121039 <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>.
%F A121039 a(n) ~ 19n. - _Charles R Greathouse IV_, Feb 12 2017
%t A121039 Select[19*Range[1500],MemberQ[Partition[IntegerDigits[#],2,1],{1,9}]&] (* _Harvey P. Dale_, Jun 08 2014 *)
%o A121039 (PARI) is(n)=if(n%19, return(0)); while(n>18, if(n%100==19, return(1)); n\=10); 0 \\ _Charles R Greathouse IV_, Feb 12 2017
%Y A121039 Cf. A121041, A008601, A011531, A121022, A121023, A121024, A121025, A121026, A121027, A121028, A121029, A121030, A121031, A121032, A121033, A121034, A121035, A121036, A121037, A121038, A121040.
%K A121039 nonn,base,easy
%O A121039 1,1
%A A121039 _Reinhard Zumkeller_, Jul 21 2006
%E A121039 Corrected by _T. D. Noe_, Oct 25 2006