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 A383218 #5 Apr 19 2025 18:07:34 %S A383218 1,2,6,24,120,720,5760,51840,518400,5702400,68428800,889574400, %T A383218 12454041600,186810624000,2988969984000,50812489728000, %U A383218 914624815104000,17377871486976000,347557429739520000,7298706024529920000,160571532539658240000,3693145248412139520000 %N A383218 The product of the first n terms of A383217. %H A383218 Dominic McCarty, <a href="/A383218/b383218.txt">Table of n, a(n) for n = 1..429</a> %o A383218 (Python) %o A383218 from itertools import count %o A383218 a, p = [1], 1 %o A383218 for k in count(2): %o A383218 if str(k) not in str(p): p *= k; a.append(p) %o A383218 if len(a) >= 20: break %o A383218 print(a) %Y A383218 Cf. A383217, A033180. %K A383218 nonn,base %O A383218 1,2 %A A383218 _Dominic McCarty_, Apr 19 2025