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 A147653 #11 Jan 20 2021 17:13:59 %S A147653 10,5,9,7,6,5,7,9,8,5,4,6,8,6,8,7,7,5,5,8,6,9,8,9,8,9,4,6,7,8,6,9,6, %T A147653 10,7,7,5,4,6,6,4,7,4,5,5,5 %N A147653 Number of letters (including spaces) in last name of n-th President of U.S.A. %C A147653 a(8) = 9 because "Van Buren" has 9 letters, including the space. %H A147653 Wikipedia, <a href="http://en.wikipedia.org/wiki/Presidents_of_the_united_states">Presidents of the United States</a> %Y A147653 Cf. A008745, A072550, A084989, A090232. %K A147653 easy,nonn %O A147653 1,1 %A A147653 Jay Jacob Wind (jay.wind(AT)att.net), Nov 09 2008 %E A147653 a(45) from _Jon E. Schoenfield_, Jan 20 2017 %E A147653 a(46) from _Jon E. Schoenfield_, Jan 20 2021