A220791 Number of nonsingular n X n matrices over GF(13).

1, 12, 26208, 9726417792, 610296923230525440, 6471875909051511775903457280, 11598637276362103019770723830073032376320, 3512938445418644176053176560741858449740612202579886080

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..30

J. Overbey, W. Traves and J. Wojdylo, On the Keyspace of the Hill Cipher.

Mathematica

Table[Product[13^n - 13^k, {k, 0, n-1}], {n, 0, 8}]

Prog

(Magma) [1] cat [&*[(13^n - 13^k): k in [0..n-1]]: n in [1..8]]

Crossrefs

Cf. A002884, A003787, A003789, A003790, A053290-A053293.

Sequence in context: A127395 A076807 A308139 * A146519 A277693 A049504

Adjacent sequences: A220788 A220789 A220790 * A220792 A220793 A220794

Keyword

nonn

Author

Vincenzo Librandi, Jan 29 2013

Status

approved