[seqfan] Re: Excess permutation left moves over right moves

William Keith wjk26 at drexel.edu
Mon Jul 19 02:26:48 CEST 2010

On Jul 18, 2010, at 12:18 PM, Ron Hardin wrote:

> So the gf denominator sequence is
> (2*x-1)*(x-1)^3
> (2*x-1)^2*(x-1)^4
> (-1+3*x)*(2*x-1)^3*(x-1)^5
> (-1+3*x)^2*(2*x-1)^4*(x-1)^6

So, (x-1)^n (2x-1)^(n-2) (3x-1)^(n-4), presumably (4x-1)^(n-6), etc...

and the numerators?  Get those and we've got a formula.

William Keith

More information about the SeqFan mailing list