A267482
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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A267482: Triangle of coefficients of Gaussian polynomials [2n+1,1]_q represented as finite sum of terms (1+q^2)^k*q^(g-k), where k = 0,1,...,g with g=n.
(identification, match triangle)
1 · 1, 1 · -1, 1, 1 · -1, -2, 1, 1 … row sums 1, 2, 1, -1, -2, -1, 1, 2, …