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 A246772 #11 Jan 17 2020 16:06:56 %S A246772 1,8,0,9,1,5,5,0,1,8,8,1,5,6,0,6,0,9,5,1,5,8,9,5,7,7,3,0,1,0,0,0,1,8, %T A246772 0,0,4,9,4,4,2,9,1,0,3,3,9,9,8,8,1,0,0,0,4,9,9,5,9,4,8,3,2,4,4,3,8,9, %U A246772 8,1,7,8,0,8,2,4,5,6,3,2,8,6,5,8,4,2,9,4,6,2,4,4,0,7,4,9,0,4,9,1,1,5,5 %N A246772 Decimal expansion of 'u', an auxiliary constant associated with the asymptotic number of row-convex polyominoes. %H A246772 Steven R. Finch, <a href="http://arxiv.org/abs/2001.00578">Errata and Addenda to Mathematical Constants.</a> p. 48. %F A246772 u = first root of 944*x^3 - 295*x^2 + 28*x - 1. %F A246772 A001169(n) ~ u*v^n, where v = A246773. %e A246772 0.180915501881560609515895773010001800494429103399881... %t A246772 u = Root[944*x^3 - 295*x^2 + 28*x - 1, x, 1]; RealDigits[u, 10, 103] // First %Y A246772 Cf. A001169, A006958, A067675, A246773. %K A246772 nonn,cons,easy %O A246772 0,2 %A A246772 _Jean-François Alcover_, Sep 03 2014