%I
%S 1,3,3,6,15,10,10,45,70,35,15,105,280,315,126,21,210,840,1575,1386,
%T 462,28,378,2100,5775,8316,6006,1716,36,630,4620,17325,36036,42042,
%U 25740,6435,45,990,9240,45045,126126,210210,205920,109395,24310,55,1485,17160
%N Triangle read by rows: T(n,k)=(1/2)*C(n+k,k)*C(nk,k).
%o (PARI) T(n,k)=(1/2)*binomial(n+k,k)*binomial(n,nk)
%Y First column = A000217, second column = A050534, main diagonal = A001700, second diagonal = A033876.
%Y Cf. A063007.
%K nonn,tabl
%O 1,2
%A _Benoit Cloitre_, Mar 20 2004
