A081277
Sequences linked to this entry ?
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A200139: Triangle T(n,k), read by rows, given by (1,1,0,0,0,0,0,0,0,...) DELTA (1,0,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.
match reversed triangle
1 · 1, 1 · 2, 3, 1 · 4, 8, 5, 1 … Σ 1, 2, 6, 18, 54, 162, 486, 1458, …