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 A080811 #10 Aug 07 2015 03:14:35 %S A080811 8,81,68921,671898241,67499118303941862584001, %T A080811 6576499147308118090309591239435044518621593475579845001 %N A080811 a(1) = 8, a(n)= smallest n-th power obtained by inserting digits anywhere in a(n-1). %p A080811 buffedStr := proc(n,candid) local f ; if length(n) = 0 then RETURN(true) ; fi ; f := SearchText(substring(n,1),candid) ; if f = 0 then RETURN(false) ; else if buffedStr(substring(n,2..-1),substring(candid,f+1..-1)) = true then RETURN(true) ; else RETURN(false) ; fi ; fi ; end: A080811 := proc(preva,n) local i,tst ; i := 1 ; while true do tst := i^n ; if buffedStr(convert(preva,string),convert(tst,string)) = true then RETURN(tst) ; fi ; i := i+1 ; od: end: an :=8 ; for n from 2 to 15 do an := A080811(an,n) ; end ; # _R. J. Mathar_, Sep 20 2006 %Y A080811 Cf. A080804, A080805, A080806, A080807, A080808, A080809, A080810, A080812. %K A080811 base,more,nonn %O A080811 1,1 %A A080811 _Amarnath Murthy_, Mar 22 2003 %E A080811 2 more terms from _R. J. Mathar_, Sep 20 2006 %E A080811 One more term. _Sean A. Irvine_, Aug 31 2009