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 A114377 #18 Sep 08 2018 11:05:17 %S A114377 4,8,9,27,32,36,49,128,841,5184 %N A114377 Perfect powers equal to the sum of three factorial numbers. %C A114377 a(11), if it exists, is larger than 10^100. %C A114377 a(11), if it exists, is larger than 1024!. - _Filip Zaludek_, Sep 08 2018 %H A114377 Giovanni Resta, <a href="/A114377/a114377.txt">Decompositions for a(1)-a(10)</a> %e A114377 a(1) = 4 because 4 = 1! + 1! + 2!; %e A114377 a(2) = 8 because 8 = 1! + 1! + 3!; %e A114377 a(3) = 9 because 9 = 1! + 2! + 3!. %Y A114377 Cf. A082875, A227644-A227651, %K A114377 nonn %O A114377 1,1 %A A114377 _Giovanni Teofilatto_, Feb 10 2006 %E A114377 Offset corrected by _Arkadiusz Wesolowski_, Mar 06 2013 %E A114377 Example corrected by and a(9)-a(10) from _Giovanni Resta_, Jul 19 2013