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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((8*n^3 - 4*n^2 - 8*n + 4 + (12*n^3 + 4*n^2 - 34*n + 14)*x + (24*n^2 - 26*n + 8)*x^2 + (12*n - 8)*x^3)*v[i - 1] - ((4*n^2 + 2*n - 2)*x + (8*n^2 + 12*n - 6)*x^2 + 16*n*x^3 + 8*x^4)*deriv(v[i - 1], x))/(2*n^3 - 2*n^2 + (4*n^2 - 5*n)*x + 2*n*x^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-b13531ad79e7c629","steps":["basis A013609","D+1"],"edges":["e-4579edc5f7a4d216","e-a7711c4f6f11b3c8"],"text":"A008459 \u2192 basis A013609 \u2192 D+1"},"headline":"A008459 \u2192 basis A013609 \u2192 D+1","chain":null}