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 A344568 #9 May 23 2021 15:37:53 %S A344568 2,2,3,4,5,3,0,0,3,0,6,9,7,2,0,3,6,9,4,7,9,4,1,7,9,5,9,2,6,6,3,1,2,5, %T A344568 8,6,9,5,6,7,1,3,8,7,6,9,7,9,9,3,2,0,0,6,1,4,6,2,6,0,9,1,6,2,2,2,6,3, %U A344568 6,8,4,4,0,1,7,0,2,3,5,3,8,5,1,9,6,6,5,7,9,2,8,5,7 %N A344568 Decimal expansion of 2*(1+sqrt(82))/9. %C A344568 Dissect the unit square into 9 regions with equal areas from a given midpoint on the squares edge. This sequence gives the decimal expansion of the perimeter of the triangular region with unit height. %F A344568 Decimal expansion of 2*(1 + k*sqrt(1/k^2 + 1))/k, where k = 9. %e A344568 2.2345300306972036947941795926631... %t A344568 RealDigits[2 (1 + Sqrt[82])/9, 10, 200][[1]] // Flatten %Y A344568 Similar sequences into k regions: A344520 (k=3), A344554 (k=5), A343069 (k=7), A344569 (k=17). %K A344568 nonn,cons %O A344568 1,1 %A A344568 _Wesley Ivan Hurt_, May 23 2021