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 A265948 #17 Jan 09 2016 14:53:53 %S A265948 12,112,212,312,412,512,612,712,812,912,1012,1112,1212,1312,1412,1512, %T A265948 1612,1712,1812,1912,2012,2112,2212,2312,2412,2512,2612,2712,2812, %U A265948 2912,3012,3112,3212,3312,3412,3512,3612,3712,3812,3912,4012,4112,4212,4312,4412 %N A265948 Numbers whose name in German contains the letter Ö (O with Umlaut). %C A265948 These are the numbers whose decimal expansion contains the substring "12", with the '2' being the i-th digit for some i with i modulo 3 = 1 and the least significant digit having index 1. %C A265948 These are the numbers whose names contain 'twelve' in English. %e A265948 612 is 'sechshundertzwölf' in German, containing the letter Ö. Therefore 612 is a term of the sequence. %Y A265948 Cf. A208934. %K A265948 nonn,word %O A265948 1,1 %A A265948 _Felix Fröhlich_, Dec 19 2015