A133080
identification: the entry's rule defines the sequence for every index; tail: the sequence is the entry's tail after some prefix rows; match_*: finite agreement only.
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A133080: Interpolation operator: Triangle with an even number of zeros in each line followed by 1 or 2 ones.
(identification)
1 · 1, 1 · 0, 0, 1 · 0, 0, 1, 1 … row sums 1, 2, 1, 2, 1, 2, 1, 2, …