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 A076494 #9 Jul 18 2025 01:49:24
%S A076494 0,0,0,0,0,0,1,2,2,3,2,1,2,3,2,1,2,2,3,4,3,2,1,1,1,4,4,5,6,6,4,3,3,5,
%T A076494 6,6,5,4,4,5,5,5,6,7,6,6,7,6,6,7,7,6,5,5,6,5,7,8,7,8,8,8,8,8,8,7,9,9,
%U A076494 9,7,6,7,7,8,8,8,7,9,9,8,9,9,9,9,8,9,10,10,9,7,8,8,9,10,10,10,10,9,9,10,9
%N A076494 Number of common decimal digits of 2^n and 2^(1+n).
%t A076494 Table[Length[Intersection[IntegerDigits[2^n], IntegerDigits[2^(n+1)]]], {n, 1, 100}]
%Y A076494 Cf. A006880, A076489-A076493.
%K A076494 base,nonn
%O A076494 1,8
%A A076494 _Labos Elemer_, Oct 21 2002