OFFSET
1,2
COMMENTS
Fulman shows that the ratio a(n)/A002884(n) converges to Product_{r>=1, r == 0,2,3 mod 5} (1-2^(-(r-1)))/(1-2^(-r)).
LINKS
Jason Fulman, Cycle Indices for the Finite Classical Groups, J. Group Thy., v. 2, 1999, 251-289.
EXAMPLE
a(2) = 3, the matrices are [[1,0],[0,1]], [[0,1],[1,1]], [[1,1],[1,0]].
CROSSREFS
KEYWORD
nonn,nice
AUTHOR
Victor S. Miller, Jun 04 2013
STATUS
approved