A028682 Pseudo Galois numbers for d=20.

1, 380, 60648000, 3880986816000000, 99352641531709440000000000, 1017370731356251764129792000000000000000, 4167150450523480419075515127693312000000000000000000000

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