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 A268124 #14 Sep 06 2016 03:11:49 %S A268124 0,1024,15625,59049,117649,160000 %N A268124 a(n) = n^4 * (n+3)^6 * 4^(-n). %C A268124 This is an example of a simple sequence which generates integers for a while, but then generates no further integers. %e A268124 The third term is a(2), which is 2^4 * 5^6 * 4^-2, which is 15625. %o A268124 (PARI) a(n)=n^4*(n+3)^6/4^n \\ _Charles R Greathouse IV_, Sep 06 2016 %K A268124 nonn,fini,full,easy %O A268124 0,2 %A A268124 _Clive Tooth_, Jan 26 2016