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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((4*n^4 - 6*n^3 + 6*n^2 - 2*n + (16*n^4 - 56*n^3 + 28*n^2 - 2*n)*x + (64*n^3 - 192*n^2 + 192*n - 56)*x^2 + (64*n^2 - 96*n + 32)*x^3)*v[i - 1] + ((8*n^3 - 12*n^2 + 4*n)*x - (32*n^3 - 80*n^2 + 56*n - 12)*x^2 - (128*n^2 - 192*n + 64)*x^3 - (128*n - 64)*x^4)*deriv(v[i - 1], x))/(n^4 - 3*n^3 + 3*n^2 + (4*n^3 - 11*n^2)*x + 4*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-fdc03fad975441d0","steps":["\u03b3","D+1"],"edges":["e-510754e51c3ada00","e-203d9364c6d1ebb4"],"text":"A069466 \u2192 \u03b3 \u2192 D+1"},"headline":"A069466 \u2192 \u03b3 \u2192 D+1","chain":null}