A166962
Sequences linked to this entry ?
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A166962: Triangle T(n,k) read by rows: T(n,1) = T(n,n)=1, otherwise T(n,k) = (3n-3k+1)*T(n-1,k-1) + k*(3k-2)*T(n-1,k), 1<=k<=n.
identification, match triangle
1 · 1, 1 · 1, 12, 1 · 1, 103, 69, 1 … Σ 1, 2, 14, 174, 3322, 89756, 3211420, …