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 A113640 #9 May 23 2023 14:58:44 %S A113640 6913548721,11396574289,13842496537,14872531669,16952474813, %T A113640 16963825147,16974152381,18632427859,27569184173,28239546721, %U A113640 47569352881,54689213377,54987116329,68719214593,79633524181,93541462873,95126134837,118214685793,121899457633,123572846953 %N A113640 Zeroless pandigital strong pseudoprimes (base-2). %H A113640 Amiram Eldar, <a href="/A113640/b113640.txt">Table of n, a(n) for n = 1..10000</a> %e A113640 a(1) = 6913548721 is a term because 6913548721 is a strong pseudoprime (base-2) and also contains all digits from 1 to 9 so it is also zeroless pandigital. %Y A113640 Intersection of A050289 and A001262. %K A113640 base,nonn %O A113640 1,1 %A A113640 _Shyam Sunder Gupta_, Jan 15 2006 %E A113640 More terms from _Amiram Eldar_, Nov 10 2019