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A028682 Pseudo Galois numbers for d=20. 1
1, 380, 60648000, 3880986816000000, 99352641531709440000000000, 1017370731356251764129792000000000000000, 4167150450523480419075515127693312000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..27

FORMULA

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

MATHEMATICA

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

CROSSREFS

Sequence in context: A185493 A023910 A035845 * A222163 A297543 A297801

Adjacent sequences:  A028679 A028680 A028681 * A028683 A028684 A028685

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified September 24 22:33 EDT 2021. Contains 347651 sequences. (Running on oeis4.)