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A028683 Pseudo Galois numbers for d=21. 0
1, 420, 81496800, 6988909668048000, 264339188251171547754240000, 4409145118315866486641282521305984000000, 32432910584848683243891703579686352553931989191680000000 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n) = p^n Product (p^n - p^k) for k=0 to n-1

MATHEMATICA

FoldList[ #1*21^#2 (21^#2-1)&, 1, Range[ 20 ] ]

CROSSREFS

Sequence in context: A035846 A046167 A059951 * A198163 A014890 A159589

Adjacent sequences:  A028680 A028681 A028682 * A028684 A028685 A028686

KEYWORD

nonn

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.com)

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.