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 A095254 #12 Nov 18 2018 10:33:35
%S A095254 1,3,4,5,6,7,7,7,7,10,12,14,17,19,21,24,26,28,30,31,33,35,37,38,40,41,
%T A095254 42,44,45,46,47,49,50,51,52,53,53,54,55,56,57,58,58,59,60,60,61,62,62,
%U A095254 63
%N A095254 a(n) = floor(concatenation(1,2,3,...,n-1,n)^(1/n)).
%C A095254 Does lim_{n->infinity} a(n)/n converge? - _Ryan Propper_, Aug 29 2005
%H A095254 Harvey P. Dale, <a href="/A095254/b095254.txt">Table of n, a(n) for n = 1..1000</a>
%e A095254 a(4) = floor(1234^(1/4)) = floor(5.926...) = 5.
%t A095254 s = ""; Do[s = s <> ToString[n]; k = ToExpression[s]; Print[Floor[k^(1/n)]], {n, 1, 50}] (* _Ryan Propper_, Aug 29 2005 *)
%t A095254 Table[Floor[Surd[FromDigits[Flatten[IntegerDigits/@Range[n]]],n]],{n,60}] (* _Harvey P. Dale_, Sep 26 2016 *)
%Y A095254 Cf. A068995, A095253.
%K A095254 base,nonn
%O A095254 1,2
%A A095254 _Amarnath Murthy_, Jun 17 2004
%E A095254 More terms from _Ryan Propper_, Aug 29 2005