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 A020807 #17 Jul 29 2025 08:33:50 %S A020807 1,4,1,4,2,1,3,5,6,2,3,7,3,0,9,5,0,4,8,8,0,1,6,8,8,7,2,4,2,0,9,6,9,8, %T A020807 0,7,8,5,6,9,6,7,1,8,7,5,3,7,6,9,4,8,0,7,3,1,7,6,6,7,9,7,3,7,9,9,0,7, %U A020807 3,2,4,7,8,4,6,2,1,0,7,0,3,8,8,5,0,3,8,7,5,3,4,3,2,7,6,4,1,5,7 %N A020807 Decimal expansion of 1/sqrt(50). %H A020807 Ivan Panchenko, <a href="/A020807/b020807.txt">Table of n, a(n) for n = 0..1000</a> %F A020807 1/sqrt(50) = sqrt(2)/10. - _Alonso del Arte_, Feb 01 2015 %e A020807 1/sqrt(50) = 0.14142135623730950488016887242... %t A020807 RealDigits[1/Sqrt[50], 10, 100][[1]] (* _Alonso del Arte_, Feb 01 2015 *) %o A020807 (PARI) 1/sqrt(50) \\ _Stefano Spezia_, Jul 29 2025 %Y A020807 Cf. A002193. %K A020807 nonn,cons,easy %O A020807 0,2 %A A020807 _N. J. A. Sloane_