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 A105325 #7 Aug 19 2022 15:27:26
%S A105325 27,18,28,18,28,45,90,45,23,53,60,28,74,71,35,26,62,49,77,57,24,70,93,
%T A105325 69,99,59,57,49,66,96,76,27,72,40,76,63,3,53,54,75,94,57,13,82,17,85,
%U A105325 25,16,64,27,42,74,66,39,19,32,0,30,59,92,18,17,41,35,96,62,90,43,57,29,0
%N A105325 Digital expansion of e: numbers from each pair of successive digits.
%t A105325 Table[FromDigits[Partition[RealDigits[N[E, 200]][[1]], 2][[i]]], {i, 100}]
%t A105325 FromDigits/@Partition[RealDigits[E,10,250][[1]],2] (* _Harvey P. Dale_, Aug 19 2022 *)
%K A105325 nonn,base
%O A105325 1,1
%A A105325 _Zak Seidov_, Apr 30 2005
%E A105325 First Mathematica program corrected by _Harvey P. Dale_, Aug 19 2022