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v[1] = 1; v[2] = 2 + x; v[3] = 6 + 7*x + x^2; v[4] = 16 + 35*x + 13*x^2 + x^3; for(n = 4, N, my(i = n + 1); v[i] = (-(8*n - 24 + (10*n - 30)*x + (2*n - 6)*x^2)*v[i - 2] - ((10*n - 30)*x + (4*n - 12)*x^2)*deriv(v[i - 2], x) - (2*n - 6)*x^2*deriv(deriv(v[i - 2], x), x) + (6*n - 18 + (3*n - 9)*x)*v[i - 1] + (3*n - 9)*x*deriv(v[i - 1], x))/(n - 3)); 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-02236a48f5253afe","steps":["basis A008277"],"edges":["e-37984d7925024601"],"text":"A146986 \u2192 basis A008277"},"headline":"A146986 \u2192 basis A008277","chain":null}