OFFSET
1,3
COMMENTS
Same as the number of elements of GF(3^n) with trace 2 and subtrace 1.
LINKS
EXAMPLE
a(3;2,1)=3. Let GF(3^3) be defined by the field extension GF(3)[x]/( 1+b+2b^2+b^3 ). The three elements of GF(3^3) with trace 2 and subtrace 1 are { 2b, 1+b^2, 1+b+2b^2 }.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Frank Ruskey and Nate Kube, Aug 19 2002
STATUS
approved