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 A230981 #14 Jun 06 2023 04:20:35 %S A230981 2,1,2,1,3,2,0,3,4,3,5,5,9,6,4,2,5,7,3,2,0,2,5,3,3,0,8,6,3,1,4,5,4,7, %T A230981 1,1,7,8,5,4,5,0,7,8,1,3,0,6,5,4,2,2,1,0,9,7,6,5,0,1,9,6,0,6,9,8,6,0, %U A230981 9,8,7,1,7,6,9,3,1,6,0,5,5,8,2,7,5,5,8,1,3,0,1,4,9,1,4,6,2,3,5,9,1,0,2,5,2 %N A230981 Decimal expansion of 3/(2^(1/2)). %C A230981 Also height of an isosceles triangle with two sides of length 5^(1/2) and base of length 2^(1/2). %F A230981 Equals 3/sqrt(2) = (2^(1/2))*3/2 = A002193*A152623. %F A230981 Equals A176218 - 2. - _R. J. Mathar_, May 16 2023 %e A230981 2.1213203435596425732025330863145471178545... %t A230981 RealDigits[3/Sqrt[2], 10, 120][[1]] (* _Amiram Eldar_, Jun 06 2023 *) %Y A230981 Cf. A002193, A152623, A176218, A231348. %K A230981 nonn,cons %O A230981 1,1 %A A230981 _Omar E. Pol_, Dec 15 2013