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 A073223 #12 Feb 20 2024 06:59:14 %S A073223 1,6,3,7,3,1,1,2,3,5,1,3,0,7,5,2,0,0,3,1,0,2,4,4,4,1,1,2,1,2,7,1,6,0, %T A073223 4,1,3,6,4,0,1,2,2,3,0,6,3,2,4,8,5,4,3,5,4,0,1,2,0,2,3,1,7,5,4,2,3,8, %U A073223 6,0,2,3,6,1,3,3,3,4,1,4,0,4,1,5,7,3,5,2,7,5,3,2,2,3,0,5,1,4,4,0,5,6,5,3,2,2,3,1,5,4,2,1,2,8,1,3,5,3,3,2,6,8,8,4,4,3,1,1,9,3,1,3,9,5,4,1,3,4,1,2,2,5,0,2,5,2,9,3,1,4 %N A073223 a(n) = abs((n-th digit of Pi) - (n-th digit of e)). %e A073223 Pi = 3.141592..., e = 2.718281..., so we have a(0) = abs(3 - 2) = 1, a(1) = abs(1 - 7) = 6, a(2) = abs(4 - 1) = 3, ... %t A073223 Abs[RealDigits[Pi, 10, 150][[1]] - RealDigits[E, 10, 150][[1]]] %Y A073223 Cf. A000796, A001113. %K A073223 easy,nonn,base %O A073223 0,2 %A A073223 Y. Kelly Itakura (yitkr(AT)mta.ca), Aug 22 2002