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 A131495 #7 Aug 30 2016 18:35:42 %S A131495 1,10,19,100,278,1000,10000,100000,486935,1000000,4747520,10000000, %T A131495 100000000,112033551,181695081,499895124,979848425,1000000000, %U A131495 10000000000,19412627434,100000000000 %N A131495 Values of n such that n^n starts with the digits of n. %C A131495 All integers of the form 10^k are in the sequence. - _Farideh Firoozbakht_, Nov 06 2007 %e A131495 278 is a term of the sequence because 278^278 = 278.261... * 10^677, which starts with 278. %e A131495 19412627434^19412627434 = 19412627434.11420738589... * 10^199718747897. - Berend Jan van der Zwaag (b.j.vanderzwaag(AT)utwente.nl), Aug 12 2009 %o A131495 (PARI) s=1;for(i=1,1500,s=i^i; while(s-i>11,s=s/10);if(floor(s)==i,printp1(i,", "),)) %K A131495 more,nonn,base %O A131495 1,2 %A A131495 _Randy L. Ekl_, Aug 12 2007 %E A131495 One more term from _Farideh Firoozbakht_, Nov 06 2007 %E A131495 More terms from Berend Jan van der Zwaag (b.j.vanderzwaag(AT)utwente.nl), Aug 12 2009