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v[1] = 1; v[2] = 3 + 2*x; for(n = 2, N, my(i = n + 1); v[i] = (-(n - 1 + (8*n - 8)*x + (4*n - 4)*x^2)*v[i - 2] - ((8*n - 8)*x + (8*n - 8)*x^2)*deriv(v[i - 2], x) - (4*n - 4)*x^2*deriv(deriv(v[i - 2], x), x) + (6*n + 3 + (4*n + 2)*x)*v[i - 1] + (4*n + 2)*x*deriv(v[i - 1], x))/(n + 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 A008277"],"edges":["e-9b2f05e35e68edbc"],"text":"A114687 \u2192 basis A008277"},"headline":"A114687 \u2192 basis A008277","chain":null}