

A120331


Number of polynomials in two noncommuting variables over the field F_2 having complexity or rank n.


1



1, 1, 6, 72, 1776, 89280, 9065472, 1850148864, 757046525952, 620298979246080, 1017126921430892544, 3336658943759213395968, 21894988380633154342354944, 287369531352172835754234347520, 7543680108676972971562235527692288
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,3


LINKS



FORMULA

The reference contains a somewhat complicated formula.


EXAMPLE

The six polynomials corresponding to a(2) are: X, Y, X+Y, 1+X, 1+Y, 1+X+Y.


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



