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 A033956 #8 Jul 22 2020 19:46:46 %S A033956 2,4,8,11,19,26,35,46,52,75,87,107,115,131,145,187,206,232,267,288, %T A033956 325,353,392,412,445,519,551,578,631,684,756,816,876,916,942,1004, %U A033956 1111,1160,1169,1293,1327,1401,1529,1612,1663,1739,1826,1796,1860,1936,2058 %N A033956 Add prime(n) to A033955. %K A033956 nonn,easy %O A033956 1,1 %A A033956 _N. J. A. Sloane_, Armand Turpel armandt(AT)unforgettable.com %E A033956 More terms from _Erich Friedman_. %E A033956 a(20) onward corrected by _Sean A. Irvine_, Jul 22 2020