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A053996
Number of bases of n-dimensional vector space over GF(4).
0
1, 3, 90, 30240, 123379200, 6462306385920, 4516376686991769600, 43295772825884473845350400, 5810971590951606258595918774272000, 11092372326294974332542866301794421571584000
OFFSET
0,2
FORMULA
a(n)=(4^n - 1)(4^n - 4)...(4^n - 4^(n-1))/n!
CROSSREFS
Sequence in context: A209495 A168408 A132556 * A218143 A203477 A339580
KEYWORD
easy,nonn
AUTHOR
Vladeta Jovovic, Apr 05 2000
STATUS
approved