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 A011823 #4 May 16 2003 03:00:00 %S A011823 2,9,256,21147,1673856,89026966,3099627142,74407044673,1306811152024, %T A011823 17675571563918,191922235160156,1729283934497328,13277799809473332, %U A011823 88759840725469601,525698154348040682 %N A011823 M-sequences m_0,...,m_7 with m_1 < n. %D A011823 S. Linusson, The number of M-sequences and f-vectors, Combinatorica, 19 (1999), 255-266. %K A011823 nonn %O A011823 1,1 %A A011823 Svante Linusson (linusson(AT)math.kth.se)