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 A328515 #17 Feb 26 2021 01:41:57 %S A328515 0,0,1,1,0,1,0,1,0,0,0,1,0,2,1,0,1,2,0,1,0,0,1,0,0,0,0,0,1,0,0,1,1,0, %T A328515 2,1,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,2,0,0,1,0,0,0,1,0,1, %U A328515 1,0,1,2,0,1,0,1,3,0,1,0,0,2,2,0,0,2,2,0,2,2,0,2,1,0,3,3,0,2,0,1,2,0,0,4,0,0,3,0,0 %N A328515 Number of primes in permutations of digits per permutation class of the positive integers ordered by smallest member of this class excluding leading zeros. %C A328515 Primitive sequence of A039999. %H A328515 David A. Corneth, <a href="/A328515/b328515.txt">Table of n, a(n) for n = 0..9999</a> %e A328515 A179239(67) = 103. Its permutations of digits without leading zeros are 103, 130, 301, 310. Of these, only 103 is prime which is one number. So a(67) = 1. %Y A328515 Cf. A039999, A166921, A179239. %K A328515 nonn,base %O A328515 0,14 %A A328515 _David A. Corneth_, Oct 18 2019