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v[1] = 1; v[2] = 1 + x; v[3] = 4 + 6*x + x^2; for(n = 3, N, my(i = n + 1); v[i] = (-(2*n - 4)*v[i - 2] + (4*n - 8 + (n - 2)*x)*v[i - 1] + (n - 2)*x*deriv(v[i - 1], x))/(n - 2)); 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-d7abbe24afd98bff","steps":["basis A008277"],"edges":["e-03a712bd8e28a7a7"],"text":"A206306 \u2192 basis A008277"},"headline":"A206306 \u2192 basis A008277","chain":null}
