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 A052455 #15 Mar 31 2017 22:28:23 %S A052455 0,1,1634,8208,9474 %N A052455 Fixed points for operation of repeatedly replacing a number with the sum of the fourth power of its digits. %C A052455 This is row n=4 in A252648. - _M. F. Hasler_, Apr 12 2015 %F A052455 a(n) = A055013(a(n)). - _M. F. Hasler_, Apr 12 2015 %e A052455 a(2)=1634 since 1^4+6^4+3^4+4^4=1+1296+81+256=1634 %o A052455 (PARI) for(n=0,10^5,A055013(n)==n&&print1(n",")) \\ _M. F. Hasler_, Apr 12 2015 %Y A052455 Cf. A023052, A046074, A046197, A052464, A124068, A124069, A226970, A003321. %K A052455 base,full,nonn,fini %O A052455 1,3 %A A052455 _Henry Bottomley_, Mar 15 2000