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Number of n X n monomial matrices whose nonzero entries are unit Hurwitz quaternions.
0

%I #2 Mar 31 2012 10:21:59

%S 1,24,1152,82944,7962624,955514880,137594142720,23115815976960,

%T 4438236667576320,958659120196485120,230078188847156428800,

%U 60740641855649297203200,17493304854426997594521600,5457911114581223249490739200,1833858134499291011828888371200,660188928419744764258399813632000

%N Number of n X n monomial matrices whose nonzero entries are unit Hurwitz quaternions.

%F a(n) = 24^n*n!.

%Y Cf. A000165, A047053, A051189.

%K nonn

%O 0,2

%A _Artur Jasinski_, Mar 11 2003