A290596
Sequences linked to this entry ?
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A290596: Triangle read by rows. A generalization of unsigned Lah numbers, called L[3,1].
identification, match triangle
1 · 2, 1 · 10, 10, 1 · 80, 120, 24, 1 … Σ 1, 3, 21, 225, 3213, 57051, 1207953, …