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 A127056 #3 Mar 30 2012 18:37:02 %S A127056 1,2,9,65,719,9258,133147,2477468,48452299,1000726573,21842234124, %T A127056 581937143077,15852410442671,445324580169954,12948991063890911, %U A127056 390296042740795497,13861395944764722457,498320813544545374474 %N A127056 Diagonal of table A127054. %Y A127056 Cf. A127054, A127055. %K A127056 nonn %O A127056 0,2 %A A127056 _Paul D. Hanna_, Jan 04 2007