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v[1] = 1; v[2] = 1 + 2*x; for(n = 3, N, my(i = n); v[i] = ((1 - (n - 7)*x - (3*n - 14)*x^2 - (3*n - 11)*x^3 - (n - 3)*x^4)*v[i - 2] + (x + 4*x^2 + 6*x^3 + 4*x^4 + x^5)*deriv(v[i - 2], x) + (1 - (n - 5)*x - (2*n - 6)*x^2 - (n - 2)*x^3)*v[i - 1] + (x + 3*x^2 + 3*x^3 + x^4)*deriv(v[i - 1], x))/(1 + x)); v};\nrow(n, p) = {my(c = Vecrev(p)); c};\nT(N) = {my(v = P(N)); concat(vector(#v, i, row(i, v[i])))};\nT(10)","reading":{"first_row":1,"offset":1,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-392f49b496f79fbf","steps":["basis A008277","x \u21a6 x/(x+1)"],"edges":["e-08527b1121a7be71","e-ad1281185d1a923f"],"text":"A026729 \u2192 basis A008277 \u2192 x \u21a6 x/(x+1)"},"headline":"A026729 \u2192 basis A008277 \u2192 x \u21a6 x/(x+1)","chain":null}