[seqfan] Re: Another variant of the Catalan triangle.

[Peter Luschny]

EJ> I think it is not in the database.
EJ> T(n,k)=T(n-1,k-1)+T(n-1,k+1).

Cut out the two rightmost diagonals
1,1,1,... and 0,0,0,... in
http://oeis.org/A053121/table .

Some background and additional hints
can be found in my blog this month :
(The case s = 0 and t = 1 in the setup there.)
http://oeis.org/wiki/User:Peter_Luschny/AignerTriangles

Peter