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v[1] = 1; v[2] = 4 + 2*x; for(n = 2, N, my(i = n + 1); v[i] = (-(4*n - 4 + (12*n - 12)*x + (4*n - 4)*x^2)*v[i - 2] - ((12*n - 12)*x + (8*n - 8)*x^2)*deriv(v[i - 2], x) - (4*n - 4)*x^2*deriv(deriv(v[i - 2], x), x) + (8*n - 4 + (4*n - 2)*x)*v[i - 1] + (4*n - 2)*x*deriv(v[i - 1], x))/(n)); 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-b13531ad79e7c629","steps":["basis A013609","basis A008277"],"edges":["e-4579edc5f7a4d216","e-53ac4d6698b2bd54"],"text":"A008459 \u2192 basis A013609 \u2192 basis A008277"},"headline":"A008459 \u2192 basis A013609 \u2192 basis A008277","chain":null}