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 A017934 #43 Jul 08 2025 06:20:02 %S A017934 1,3,10,31,100,316,1000,3162,10000,31622,100000,316227,1000000, %T A017934 3162277,10000000,31622776,100000000,316227766,1000000000,3162277660, %U A017934 10000000000,31622776601,100000000000,316227766016,1000000000000,3162277660168,10000000000000 %N A017934 Powers of sqrt(10) rounded down. %H A017934 Vincenzo Librandi, <a href="/A017934/b017934.txt">Table of n, a(n) for n = 0..1000</a> %F A017934 a(n) = floor(sqrt(10^n)). - _Zak Seidov_ %t A017934 Floor[Sqrt[10^Range[0,100]]] (* _Zak Seidov_ *) %o A017934 (Magma) A017934 := func< n | Isqrt(10^n) >; // _Jason Kimberley_, Aug 19 2011 %o A017934 (Magma) A017934 := func< n | Floor(Sqrt(RealField(n)!10^n)) >; // _Jason Kimberley_, Aug 19 2011 %o A017934 (PARI) a(n)=sqrtint(10^n) \\ _Charles R Greathouse IV_, Nov 18 2011 %Y A017934 Cf. A010467 Decimal expansion of sqrt(10), A131581, A136582, A175733, A175734. %K A017934 nonn %O A017934 0,2 %A A017934 _N. J. A. Sloane_