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 A085861 #7 Jul 11 2020 13:10:32 %S A085861 0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,1,1,0,0,1,0,2,1,0,1,0,0,1,0,0,0,1,1, %T A085861 2,1,0,2,0,0,0,0,1,1,2,1,0,2,2,4,0,1,0,1,3,0,2,0,2,1,1,2,2,2,2,4,4,1, %U A085861 2,1,1,1,1,0,1,3,2,4,1,2,2,2,2,2,1,0,3,2,3,4,2,1,2,2,3,0,2,2,2,0,2,3,4,2,2 %N A085861 Number of 7's in decimal expansion of Fibonacci(n). %t A085861 DigitCount[Fibonacci[Range[0,110]],10,7] (* _Harvey P. Dale_, Jul 11 2020 *) %Y A085861 Cf. 0's A085854, 1's A085855, 2's A085856, 3's A085857, 4's A085858, 5's A085859, 6's A085860, 8's A085862, 9's A085863. %K A085861 base,nonn %O A085861 0,15 %A A085861 _Jason Earls_, Jul 06 2003