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v[1] = 2; v[2] = 3 + 5*x; for(n = 2, N, my(i = n + 1); v[i] = (-(1 + (n + 2)*x + (4*n - 3)*x^2 + (6*n - 11)*x^3 + (4*n - 10)*x^4 + (n - 3)*x^5)*v[i - 2] + (x^2 + 4*x^3 + 6*x^4 + 4*x^5 + x^6)*deriv(v[i - 2], x) + (2 + (n + 7)*x + (4*n + 8)*x^2 + (6*n + 2)*x^3 + (4*n - 2)*x^4 + (n - 1)*x^5)*v[i - 1] - (x^2 + 4*x^3 + 6*x^4 + 4*x^5 + x^6)*deriv(v[i - 1], x))/(1 + 3*x + 3*x^2 + x^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-3cb22164e2f83fe1","steps":["\u03b8+2 (shift +1)","reverse","x \u21a6 x/(x+1)"],"edges":["e-03634c4c239678ec","e-8604a0137325fa22","e-90f445bc9ee5d429"],"text":"A008277 \u2192 \u03b8+2 (shift +1) \u2192 reverse \u2192 x \u21a6 x/(x+1)"},"headline":"A008277 \u2192 \u03b8+2 (shift +1) \u2192 reverse \u2192 x \u21a6 x/(x+1)","chain":null}
