FW: another Motzkin triangle, no shortage of'm

[wouter meeussen]

should have been:
mat[w_Integer] := Table[If[i==j-1 || i>j,1,0], {i,w}, {j,w}]

GF[w_]:= (1+x)g[w]/g[w+2]

with g[w_] := Det[IdentityMatrix[w] - x*mat[w]]

without beautiful 'closed form' for g(w).

Wouter.




----- Original Message -----
From: "wouter meeussen" <wouter.meeussen at pandora.be>
To: <ralf at ark.in-berlin.de>
Cc: "Seqfan (E-mail)" <seqfan at ext.jussieu.fr>
Sent: Monday, April 12, 2004 1:21 PM
Subject: Re: FW: another Motzkin triangle, no shortage of'm


disregard the "GF(w) equals f[w]/f[w+2]", it's wrong.
That one generates the catalans.

my fault: not clearing the matrix-definition before redefining it
(after experimenting with changes).

Mma *don'wanna* because it's plain wrong.

Sorry,

W.