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Triangle T read by rows : T(n,k)= A007318(n,k)*A005773(n-k).
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%I #3 Sep 08 2013 13:31:52

%S 1,1,1,2,2,1,5,6,3,1,13,20,12,4,1,35,65,50,20,5,1,96,210,195,100,30,6,

%T 1,267,672,735,455,175,42,7,1,750,2136,2688,1960,910,280,56,8,1,2123,

%U 6750,9612,8064,4410,1638,420,72,9,1

%N Triangle T read by rows : T(n,k)= A007318(n,k)*A005773(n-k).

%F Sum_{k, 0<=k<=n} T(n,k)= A024718(n).

%e Triangle begins : 1 ; 1,1 ; 2,2,1 ; 5,6,3,1 ; 13,20,12,4,1 ; 35,65,50,20,5,1 ; ...

%Y Cf. A171651

%K nonn,tabl

%O 0,4

%A _Philippe Deléham_, Dec 14 2009