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%I #7 Sep 08 2022 08:45:08
%S 1,19,130321,322687697779,288441413567621167681,
%T 93076495688256089536609610280499,
%U 10842505080063916320800450434338728415281531281
%N Number of n X n matrices over an alphabet of size 19.
%C a(n) = k^(n^2) with k = 2, 3, 4, ... counts n X n matrices over an alphabet of size k.
%H Vincenzo Librandi, <a href="/A078353/b078353.txt">Table of n, a(n) for n = 0..25</a>
%F a(n) = 19^(n^2)
%t Table[19^(n^2), {n, 0, 7}]
%o (Magma) [19^(n^2): n in [0..10]]; // _Vincenzo Librandi_, Jun 05 2011
%Y Cf. A078352.
%K nonn
%O 0,2
%A Vincenzo Origlio (vincenzo.origlio(AT)itc.cnr.it), Nov 25 2002
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