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 A199820 #15 Sep 08 2022 08:46:00 %S A199820 331,61051,51159090448414546291 %N A199820 Primes of the form 11^n - 10^n. %C A199820 The next term is too large to include (see A062577). %H A199820 Vincenzo Librandi, <a href="/A199820/b199820.txt">Table of n, a(n) for n = 1..6</a> %t A199820 Select[11^Range[3000]-10^Range[3000],PrimeQ] %o A199820 (Magma) [ a: n in [0..300] | IsPrime(a) where a is 11^n-10^n ] %Y A199820 Cf. A062577. %K A199820 nonn,bref %O A199820 1,1 %A A199820 _Vincenzo Librandi_, Nov 21 2011