A116414
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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A116414: Riordan array (1/((1-x)(1-3x)),x/((1-x)(1-3x))).
(identification, match triangle)
1 · 4, 1 · 13, 8, 1 · 40, 42, 12, 1 … row sums 1, 5, 22, 95, 409, 1760, 7573, 32585, …
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A116414 → reverse
(match reversed triangle)
1 · 1, 4 · 1, 8, 13 · 1, 12, 42, 40 … row sums 1, 5, 22, 95, 409, 1760, 7573, 32585, …