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{my(c = Vecrev(p)); c};\nT(N) = {my(v = P(N)); concat(vector(#v, i, row(i - 1, v[i])))};\nT(9)","reading":{"first_row":0,"offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-4e0759372c05411f","steps":["x \u21a6 x/(x+1)"],"edges":["e-e0533dcbde1c661c"],"text":"A090452 \u2192 x \u21a6 x/(x+1)"},"headline":"A090452 \u2192 x \u21a6 x/(x+1)","chain":null}
