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v[1] = 2 + 2*x; for(n = 1, N, my(i = n + 1); v[i] = ((2 + (3*n + 4)*x + (n^2 + 3*n + 2)*x^2)*v[i - 1])/(2 + (n + 1)*x)); v};\nrow(n, p) = {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-2feb6dc01f424b0a","steps":["P\u2099 + P\u2099\u208a\u2081"],"edges":["e-318fe044440ebc67"],"text":"A145324 \u2192 P\u2099 + P\u2099\u208a\u2081"},"headline":"A145324 \u2192 P\u2099 + P\u2099\u208a\u2081","chain":null}
