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 A053401 #15 Aug 31 2021 01:07:42 %S A053401 1,60,3600,86400,604800,2629746,31556952,3155695200,31556952000, %T A053401 31556952000000000 %N A053401 Number of seconds in the time units: second, minute, hour, day, week, month, year, century, millennium, (a)eon. %C A053401 The last five numbers are based on the average Gregorian year of 365.2425 days. %K A053401 easy,fini,nonn,full %O A053401 1,2 %A A053401 Jean Fontaine (jfontain(AT)odyssee.net), Jan 07 2000