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v[1] = 13 + 20*x + 4*x^2; v[2] = 63 + 182*x + 84*x^2 + 8*x^3; for(n = 2, N, my(i = n + 1); v[i] = (-(n + 1 + (8*n + 8)*x + (4*n + 4)*x^2)*v[i - 2] - ((8*n + 8)*x + (8*n + 8)*x^2)*deriv(v[i - 2], x) - (4*n + 4)*x^2*deriv(deriv(v[i - 2], x), x) + (6*n + 9 + (4*n + 6)*x)*v[i - 1] + (4*n + 6)*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-b31aa1a3fd93d174","steps":["basis A008277"],"edges":["e-033100947c42f87a"],"text":"A133214 \u2192 basis A008277"},"headline":"A133214 \u2192 basis A008277","chain":null}