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v[1] = 41 + 17*x + x^2; for(n = 1, N, my(i = n + 1); v[i] = (6 + x)*v[i - 1] + (5 + 5*x)*deriv(v[i - 1], x)); 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-77f76afdd288bbc1","steps":["x \u21a6 x+1"],"edges":["e-f45bb0f8dabdab85"],"text":"A075500 \u2192 x \u21a6 x+1"},"headline":"A075500 \u2192 x \u21a6 x+1","chain":null}