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 A275911 #8 Oct 19 2017 10:46:18 %S A275911 1,2,4,16,120,210,216,256,384,2880,6300,7200,15360,15552,26880,27648, %T A275911 32768,49152,73728,83160,120120,189000,510510,921600,1399680,1966080, %U A275911 2365440,2822400,2985984,3440640,4194304,4860000,5670000,6291456,6912000,9437184 %N A275911 Intersection of A025487 and A026477. %D A275911 _Don Reble_, Posting to Sequence Fans Mailing List, Aug 26 2016 %K A275911 nonn %O A275911 1,2 %A A275911 _N. J. A. Sloane_, Aug 26 2016