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 A330689 #5 Dec 28 2019 17:02:55 %S A330689 1,4,16,64,36,256,144,1024,81,576,324,2304,1296,5184,2916,20736,11664, %T A330689 82944,14400,46656,331776,57600,32400,1327104,104976,230400,746496, %U A330689 40000,129600,419904,921600,160000,1679616,3686400,291600,640000,2073600,6718464,360000,1166400,2560000,26873856,1440000,313600,4665600,10240000,810000 %N A330689 Primorial deflation of A330687 (record positions in A050377): a(n) is the unique integer x such that A108951(x) = A330687(n). %H A330689 Antti Karttunen, <a href="/A330689/b330689.txt">Table of n, a(n) for n = 1..294</a> %F A330689 a(n) = A329900(A330687(n)). %o A330689 (PARI) A330689(n) = A329900(A330687(n)); %Y A330689 Cf. A050376, A050377, A108951, A329900, A330687. %K A330689 nonn %O A330689 1,2 %A A330689 _Antti Karttunen_, Dec 28 2019