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Pseudo Galois numbers for d=20.
1

%I #10 Dec 30 2012 02:03:31

%S 1,380,60648000,3880986816000000,99352641531709440000000000,

%T 1017370731356251764129792000000000000000,

%U 4167150450523480419075515127693312000000000000000000000

%N Pseudo Galois numbers for d=20.

%H Vincenzo Librandi, <a href="/A028682/b028682.txt">Table of n, a(n) for n = 0..27</a>

%F a(n) = d^n * product(d^n - d^k, k=0..n-1).

%t FoldList[ #1*20^#2 (20^#2-1)&, 1, Range[ 20 ] ]

%K nonn

%O 0,2

%A _Olivier GĂ©rard_