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v[1] = 1; for(n = 2, N, my(i = n); v[i] = (-(9*n - 20 + (44*n - 98)*x + (82*n - 178)*x^2 + (68*n - 142)*x^3 + (21*n - 42)*x^4)*v[i - 1] + (5 + 37*x + 102*x^2 + 134*x^3 + 85*x^4 + 21*x^5)*deriv(v[i - 1], x))/(2*n - 2 + (4*n - 4)*x + (2*n - 2)*x^2)); v};\nrow(n, p) = {my(c = Vecrev(p)); c};\nT(N) = {my(v = P(N)); concat(vector(#v, i, row(i, v[i])))};\nT(10)","reading":{"first_row":1,"offset":1,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-392f49b496f79fbf","steps":["basis A013609","x \u21a6 x/(x+1)"],"edges":["e-6b05245c845c9a6d","e-93865acfc0e1b228"],"text":"A026729 \u2192 basis A013609 \u2192 x \u21a6 x/(x+1)"},"headline":"A026729 \u2192 basis A013609 \u2192 x \u21a6 x/(x+1)","chain":null}