A006355
Sequences linked to this entry ?
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A128540: Triangle A127647 * A097806, read by rows.
match row sums
1 · 1, 1 · 0, 2, 2 · 0, 0, 3, 3 … Σ 1, 2, 4, 6, 10, 16, 26, 42, …
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Triangle T(n,k), read by rows, given by (1,-1,0,0,0,0,0,0,0,0,0,...) DELTA (1,0,-1,1,0,0,0,0,0,0,0,...) where DELTA is the operator defined in A084938.
match row sums
1, 1 · 0, 1, 1 · 0, 1, 2, 1 · 0, 0, 2, 3, 1 … Σ 2, 2, 4, 6, 10, 16, 26, 42, …