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 A042976 #11 Aug 04 2025 17:47:12 %S A042976 0,1,4,6,7,0,3,2,3,7,9,9,0,3,4,7,6,9,1,0,3,6,7,6,9,9,0,4,8,5,6,9,9,2, %T A042976 1,6,7,6,8,2,2,1,2,5,7,0,1,0,5,2,3,4,7,8,2,3,2,5,6,5,7,0,1,2,1,4,7,8, %U A042976 8,2,2,1,2,7,4,5,7,0,7,2,5,6,5,7,0,1,0,2,4,3,9,1,9,0,3,2,5,6,7 %N A042976 Decimal expansion of 0.121121112...^2. %H A042976 C. V. Eynden, <a href="http://www.jstor.org/stable/2975298">Problem 10439. An irrational mimic of 1/9</a>, Amer. Math. Monthly, 104 (1997), 873. %Y A042976 Cf. A042974. %K A042976 nonn,cons %O A042976 0,3 %A A042976 _N. J. A. Sloane_