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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = (-(4*n - 6 + (22*n - 34)*x + (48*n - 66)*x^2 + (46*n - 54)*x^3 + (16*n - 16)*x^4)*v[i - 1] + (2 + 18*x + 58*x^2 + 86*x^3 + 60*x^4 + 16*x^5)*deriv(v[i - 1], x))/(n + 2*n*x + 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-f5a001953ee28e8f","steps":["basis A013610","x \u21a6 x/(x+1)"],"edges":["e-937d6a83cea8d959","e-c90d8f850ac9bce7"],"text":"A099040 \u2192 basis A013610 \u2192 x \u21a6 x/(x+1)"},"headline":"A099040 \u2192 basis A013610 \u2192 x \u21a6 x/(x+1)","chain":null}