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Real-rooted atlas
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A099837
Sequences linked to this entry
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A110162: Riordan array ((1-x)/(1+x), x/(1+x)^2).
match row sums
1 · -2, 1 · 2, -4, 1 · -2, 9, -6, 1 …
Σ
1, -1, -1, 2, -1, -1, 2, -1, …
(0, 4)