A153518
Sequences linked to this entry ?
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A153518: Triangular T(n,k) = T(n-1, k) + T(n-1, k-1) + 5*T(n-2, k-1), read by rows.
identification, match reversed triangle, match triangle
2 · 5, 5 · 2, 46, 2 · 2, 123, 123, 2 … Σ 2, 10, 50, 250, 750, 2750, 9250, 32250, …