A053996 Number of bases of n-dimensional vector space over GF(4).

1, 3, 90, 30240, 123379200, 6462306385920, 4516376686991769600, 43295772825884473845350400, 5810971590951606258595918774272000, 11092372326294974332542866301794421571584000

Offset: 0

Author

Vladeta Jovovic, Apr 05 2000

Keywords

• easy
• nonn

Crossrefs

Cf. A053291, A053601.

Formula

a(n)=(4^n - 1)(4^n - 4)...(4^n - 4^(n-1))/n!