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v[1] = 1; v[2] = 3; v[3] = 5; v[4] = 11 + x; for(n = 4, N, my(i = n + 1); v[i] = 2*v[i - 1] + 3*v[i - 2] - 4*v[i - 3] - (4 - x)*v[i - 4]); 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-75ccd0453a9b6cec","steps":["x \u21a6 x+2 (shift +1)","Veronese 2"],"edges":["e-7fc1b55fb0aa373a","e-0527b2f699cf5083"],"text":"A011973 \u2192 x \u21a6 x+2 (shift +1) \u2192 Veronese 2"},"headline":"A011973 \u2192 x \u21a6 x+2 (shift +1) \u2192 Veronese 2","chain":null}
