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 A357526 #5 Oct 02 2022 13:45:43
%S A357526 0,1,0,0,0,0,0,0,0,0,2,3,1,1,1,1,1,1,1,1,2,3,2,2,2,0,0,0,0,0,2,3,3,2,
%T A357526 1,0,1,0,0,0,3,4,3,2,1,0,1,0,0,0,2,3,1,1,1,0,0,0,0,0,4,5,3,2,2,1,1,0,
%U A357526 0,0,2,3,1,1,1,1,1,0,0,0,4,5,2,3,1,1,1,1,0,0,3
%N A357526 Number of nonnegative integers less than n with the same product of the nonzero decimal digits as n.
%H A357526 Ilya Gutkovskiy, <a href="/A357526/a357526.jpg">Scatterplot of a(n) up to n=10000</a>
%F A357526 a(n) = |{j < n : A051801(j) = A051801(n)}|.
%e A357526 a(1) = 1 because A051801(1) = 1 and also A051801(0) = 1.
%e A357526 a(21) = 3 because A051801(21) = 2 and also A051801(2) = A051801(12) = A051801(20) = 2.
%t A357526 Table[Length[Select[Range[0, n - 1], Times @@ DeleteCases[IntegerDigits[#], 0] == Times @@ DeleteCases[IntegerDigits[n], 0] &]], {n, 0, 90}]
%Y A357526 Cf. A051801, A138471, A254524, A338505.
%K A357526 nonn,base
%O A357526 0,11
%A A357526 _Ilya Gutkovskiy_, Oct 02 2022