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 A071361 #11 May 03 2017 21:54:18 %S A071361 7,97,983,9871,98731,987631,9875321,98765431 %N A071361 Largest n-digit prime with strictly decreasing digits. %C A071361 Differs from A007810 (largest prime with n distinct digits) from a(7) on. [Edited by _M. F. Hasler_, May 03 2017] %o A071361 (PARI) A071361(n,u=-vectorv(n,i,10^(n-i)))=forvec(d=vector(n,i,-[9,1]),isprime(d*u)&&return(d*u),2) \\ _M. F. Hasler_, May 03 2017 %Y A071361 Cf. A071360, A071362, A071363, A007810. %K A071361 base,fini,full,nonn %O A071361 1,1 %A A071361 _Rick L. Shepherd_, May 21 2002