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 A341438 #19 Mar 18 2021 13:33:26 %S A341438 0,9,5,9,5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,9,1,1,1,7, %T A341438 7,7,7,7,7,7,7,7,7,9,7,0,0,7,9,9,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, %U A341438 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 %N A341438 First digit to appear n times in the decimal expansion of Catalan's constant. %Y A341438 Cf. A006752, A096567, A195138, A195139, A195141, A280811, A341430. %K A341438 nonn,base %O A341438 1,2 %A A341438 _Omar E. Pol_, Feb 11 2021 %E A341438 More digits from _Alois P. Heinz_, Mar 16 2021