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 A048462 #6 Oct 14 2019 23:41:21 %S A048462 3,7,13,23,43,67,97,125,127,179,181,237,339,403,453,729,757,879,1109, %T A048462 1399,2199,2653,4491,5335,6231,7461,8933,12093,12613,14409,14687, %U A048462 18183,18917,23591,25131,27933,29199,32877,36233,36639,36949,49193,50745 %N A048462 Odd numbers in sorted order from generation 2 onwards. %Y A048462 Cf. A048448-A048455. See also A047844. %K A048462 nonn %O A048462 0,1 %A A048462 _Patrick De Geest_, May 15 1999