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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((6*n^3 + 18*n^2 + 19*n + 7 + (4*n^3 + 12*n^2 + 6*n - 2)*x - (10*n + 10)*x^2 - (4*n + 4)*x^3)*v[i - 1] + (8*n^2 + 8*n - 4 + (12*n^2 + 12*n - 22)*x + (4*n^2 + 4*n - 34)*x^2 - 20*x^3 - 4*x^4)*deriv(v[i - 1], x))/(2*n^3 + 3*n - 2*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-c2b7c74f8491f01b","steps":["basis A013611","D+1"],"edges":["e-3938f5b848156b83","e-dc2ec16d86ba9683"],"text":"A207824 \u2192 basis A013611 \u2192 D+1"},"headline":"A207824 \u2192 basis A013611 \u2192 D+1","chain":null}