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 A323387 #20 Jan 18 2019 04:41:12 %S A323387 19,41,109,149,401,409,419,491,941,1049,1409,4019,4091,9041 %N A323387 Primes whose digits are distinct square digits, i.e., consisting of only digits 0, 1, 4, 9. %C A323387 There are only fourteen terms in this sequence, which is a finite subsequence of A061246. %H A323387 Chris K. Caldwell and G. L. Honaker, Jr., <a href="https://primes.utm.edu/curios/page.php?short=9041">9041</a>, Prime Curios! %e A323387 1049 is the smallest prime containing all the square digits exactly once, and 9041 is the largest one. %Y A323387 Subsequence of A061246. Subsequence of A029743. %K A323387 nonn,base,fini,full %O A323387 1,1 %A A323387 _Bernard Schott_, Jan 13 2019