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A137342
Number of rational series having complexity n over the finite field F_2 in two non-commuting variables.
2
1, 4, 240, 52032, 37961472, 95557604352, 873176389545984, 30234012628981334016, 4073184753921806027390976, 2164965110784257951109280432128, 4571419424684923104187906920444592128
OFFSET
0,2
FORMULA
The reference contains a somewhat complicated formula.
CROSSREFS
Sequence in context: A051753 A323996 A094073 * A152793 A042769 A332124
KEYWORD
nonn
AUTHOR
Roland Bacher, Apr 08 2008
STATUS
approved