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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = (-(n - 10 + (11*n - 44)*x + (31*n - 70)*x^2 + (33*n - 48)*x^3 + (12*n - 12)*x^4)*v[i - 1] + (4 + 26*x + 66*x^2 + 82*x^3 + 50*x^4 + 12*x^5)*deriv(v[i - 1], x))/(n + 2 + (2*n + 4)*x + (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 - 1, v[i])))};\nT(9)","reading":{"first_row":0,"offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-66e2c3448245b0b7","steps":["x \u21a6 x+1","x \u21a6 x/(x+1)"],"edges":["e-190c283dd8b47413","e-d3046f70fca10620"],"text":"A033282 \u2192 x \u21a6 x+1 \u2192 x \u21a6 x/(x+1)"},"headline":"A033282 \u2192 x \u21a6 x+1 \u2192 x \u21a6 x/(x+1)","chain":null}