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 A017937 #17 Sep 08 2022 08:44:43 %S A017937 1,3,11,36,121,401,1331,4414,14641,48558,161051,534145,1771561, %T A017937 5875603,19487171,64631634,214358881,710947978,2357947691,7820427766, %U A017937 25937424601,86024705429,285311670611 %N A017937 Powers of sqrt(11) rounded down. %H A017937 Vincenzo Librandi, <a href="/A017937/b017937.txt">Table of n, a(n) for n = 0..900</a> %F A017937 a(n) = floor(sqrt(11^n)). - _Vincenzo Librandi_, Jun 24 2011 %t A017937 Floor[(Sqrt[11])^Range[0,30]] (* _Harvey P. Dale_, Feb 01 2014 *) %o A017937 (Magma)[Floor(Sqrt(11^n)): n in [0..30]]; // _Vincenzo Librandi_, Jun 24 2011 %o A017937 (PARI) a(n)=sqrtint(11^n) \\ _Charles R Greathouse IV_, Nov 18 2011 %Y A017937 Cf. A010468 (sqrt(11)). %K A017937 nonn %O A017937 0,2 %A A017937 _N. J. A. Sloane_