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 A101698 #4 Mar 30 2012 17:37:42
%S A101698 0,1,684817,3371797
%N A101698 Numbers n such that n = d_1*d_1!+d_2*d_2!+...+d_k*d_k!, where d_1 d_2 ... d_k is the decimal expansion of n.
%e A101698 3371797 is in the sequence because 3371797 = 3*3!+3*3!+7*7!+1*1!+7*7!+9*9!+7*7!.
%t A101698 Do[If[n==Apply[Plus, IntegerDigits[n]*IntegerDigits[n]! ], Print[n]], {n, 26000000}]
%Y A101698 Cf. A014080, A097642, A101699.
%K A101698 base,fini,full,nonn
%O A101698 1,3
%A A101698 _Farideh Firoozbakht_, Dec 18 2004