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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((8*n + 1 + (43*n - 4)*x + (77*n - 26)*x^2 + (57*n - 36)*x^3 + (15*n - 15)*x^4)*v[i - 1] - (1 + 11*x + 42*x^2 + 70*x^3 + 53*x^4 + 15*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-8ce61d302cec295b","steps":["basis A013609","x \u21a6 x/(x+1)"],"edges":["e-01612a21c966f541","e-9a7f7bc615f1cb6b"],"text":"A114687 \u2192 basis A013609 \u2192 x \u21a6 x/(x+1)"},"headline":"A114687 \u2192 basis A013609 \u2192 x \u21a6 x/(x+1)","chain":null}