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 A372806 #16 May 17 2024 02:54:28
%S A372806 1,1,5,2,3,6,8,7,5,8,0,0,2,5,6,0,8,1,9,4,6,2,2,2,7,9,1,2,9,3,2,1,3,8,
%T A372806 2,8,4,2,5,0,9,6,0,3,0,7,2,9,8,3,3,5,4,6,7,3,4,9,5,5,1,8,5,6,5,9,4,1,
%U A372806 1,0,1,1,5,2,3,6,8,7,5,8,0,0,2,5,6,0,8,1,9,4
%N A372806 Decimal expansion of 90/781.
%H A372806 J. M. Borwein and P. B. Borwein, <a href="https://doi.org/10.2307/2324993">Strange Series and High Precision Fraud</a>, The American Mathematical Monthly, Vol. 99, No. 7 (1992), pp. 622-640.
%H A372806 <a href="/index/Rec#order_70">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
%F A372806 Equals Sum_{j >= 1} f(j)/2^j, where f(j) = Sum_{k >= 0, (k+1)-th digit from the right of 2^j is odd} A007598(k). See Example 5.1 (c) in Borwein and Borwein (1992), pp. 638-639.
%e A372806 0.11523687580025608194622279129321382842509603072983354673...
%t A372806 First[RealDigits[90/781, 10, 100]]
%Y A372806 Cf. A000079, A007598, A021785.
%K A372806 nonn,cons,easy
%O A372806 0,3
%A A372806 _Paolo Xausa_, May 13 2024