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 A247266 #9 Dec 10 2014 10:12:01 %S A247266 5197,16402517,467943467,504990823,749554913,857435633,2430292847, %T A247266 4486052491,6659865703,7064402549,7487094821,13947137657,21257640067, %U A247266 30293402527,79101562571,155450410033,169935221879,440301256711,1010752751093,1086948034657,1265625000037 %N A247266 a(n) = s, last of four consecutive primes p,q,r,s with p+q+r+s = A245577(n)^4. %H A247266 Zak Seidov, <a href="/A247266/b247266.txt">Table of n, a(n) for n = 1..1189</a> %Y A247266 Cf. A245577, A247258, A247259, A247265. %K A247266 nonn %O A247266 1,1 %A A247266 _Zak Seidov_, Nov 30 2014