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 A096484 #8 Aug 29 2024 02:39:44 %S A096484 1,10,105,1054,10540,105409,1054092,10540925,105409255,1054092553, %T A096484 10540925533,105409255338,1054092553389,10540925533894, %U A096484 105409255338945,1054092553389459,10540925533894597,105409255338945977 %N A096484 Integer part of the square root of (2n-1)-th decimal repunit. %F A096484 a(n) = floor(sqrt((10^(2*n-1)-1)/9)). %F A096484 a(n) = A000196(A002275(2*n-1)). %F A096484 a(n) = A096483(2*n-1). - _Jason Yuen_, Aug 29 2024 %e A096484 a(4) = floor(sqrt(1111111)) = 1054. 1111111 is the 7th decimal repunit. %Y A096484 Cf. A000196, A002275, A096483. %K A096484 base,nonn,easy %O A096484 1,2 %A A096484 _Labos Elemer_, Jun 24 2004