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 A090903 #6 Aug 29 2023 20:17:17 %S A090903 1,3,3,3,4,5,5,6,7,7,0,7,6,0,3,3,6,1,3,3,0,7,3,1,9,6,7,3,8,3,4,1,6,7, %T A090903 8,7,7,5,3,5,8,3,6,4,7,3,4,7,8,5,7,9,7,2,2,5,2,5,0,9,8,1,9,8,1,0,0,3, %U A090903 9,9,9,5,4,5,1,7,3,6,1,6,0,6,8,2,9,7,2,1,7,3,5,8,9,5,7,1,2,2,2,6,1,7,7,7,1 %N A090903 Let f(n) be formed by concatenation of first n numbers after the decimal point; a(n) = the n-th digit of 1/f(n) from the most significant side ignoring the decimal point. %e A090903 a(6) = 5, 1/0.123456 = 8.1000518403317781233799896319336... %e A090903 a(15) = 3, 1/0.123456789101112131415 = 8.1000000670760336133179300045884... %K A090903 base,nonn %O A090903 1,2 %A A090903 _Amarnath Murthy_, Dec 12 2003 %E A090903 More terms from _David Wasserman_, Feb 02 2006