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 A028670 #14 Jul 14 2025 00:25:42
%S A028670 1,56,225792,59074412544,990862210530017280,
%T A028670 1063897728694258113372487680,73110216322082119251081045710796226560,
%U A028670 321541978498155599038038914825594113520368216965120,90506015514687373224170805357005639908589558859612764874001612800
%N A028670 Pseudo Galois numbers for d=8; order of group AGL(n,2^3).
%H A028670 Vincenzo Librandi, <a href="/A028670/b028670.txt">Table of n, a(n) for n = 0..33</a>
%F A028670 a(n) = 8^n * Product_{k=0..n-1} (8^n - 8^k).
%F A028670 a(n) ~ c * 8^(n^2+n), where c = A132036. - _Amiram Eldar_, Jul 13 2025
%t A028670 FoldList[ #1*8^#2 (8^#2-1)&, 1, Range[ 20 ] ]
%t A028670 a[n_] := 8^n * Product[8^n - 8^k, {k, 0, n-1}]; Array[a, 9, 0] (* _Amiram Eldar_, Jul 13 2025 *)
%o A028670 (PARI) a(n) = 8^n * prod(k = 0, n-1, 8^n - 8^k); \\ _Amiram Eldar_, Jul 13 2025
%Y A028670 Cf. A028668, A028671, A028672, A028674, A028676, A028677, A028678, A028680, A028682, A028683, A028684, A028686.
%Y A028670 Cf. A132036.
%K A028670 nonn
%O A028670 0,2
%A A028670 _Olivier Gérard_