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 A251560 #3 Dec 26 2014 14:32:36 %S A251560 1,3,2,9,5,6,7,27,4,10,11 %N A251560 Erroneous version of A064614. %C A251560 Included in accordance with OEIS policy of listing published but incorrect sequences with pointers to the correct versions. %D A251560 Frizell, A. B.; Certain non-enumerable sets of infinite permutations. Bull. Amer. Math. Soc. 21 (1915), no. 10, 495-499. [There is a typo: he has 10 instead of 15.] %K A251560 dead %O A251560 1,2 %A A251560 _N. J. A. Sloane_, Dec 26 2014