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 A344554 #22 May 23 2021 15:37:48 %S A344554 2,4,3,9,6,0,7,8,0,5,4,3,7,1,1,3,9,3,2,0,1,1,2,8,9,6,4,3,6,0,9,1,1,2, %T A344554 7,9,5,8,2,5,5,0,8,3,7,8,4,3,9,8,3,8,5,6,3,0,3,3,9,8,8,3,2,1,7,7,0,3, %U A344554 7,3,4,5,2,8,2,4,8,8,9,6,7,8,2,3,5,3,3,9,5,4,0,4,3,7 %N A344554 Decimal expansion of 2*(1+sqrt(26))/5. %C A344554 Dissect the unit square into 5 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 A344554 Decimal expansion of 2*(1 + k*sqrt(1/k^2 + 1))/k, where k = 5. %e A344554 2.43960780543711393201128964360... %t A344554 RealDigits[2 (1 + Sqrt[26])/5, 10, 200][[1]] // Flatten %Y A344554 Similar sequences into k regions: A344520 (k=3), A343069 (k=7), A344568 (k=9), A344569 (k=17). %K A344554 nonn,cons %O A344554 1,1 %A A344554 _Wesley Ivan Hurt_, May 23 2021