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18 + (48*n - 96)*x + (64*n - 128)*x^2)*P[n - 2, x] + (3*n - 2 + (8*n - 8)*x)*P[n - 1, x]];\nTable[CoefficientList[P[n, x], x], {n, 1, 10}] // Flatten","pari":"P(N) = {my(v = vector(N)); v[1] = 1; v[2] = 4 + 8*x; for(n = 3, N, my(i = n); v[i] = -(9*n - 18 + (48*n - 96)*x + (64*n - 128)*x^2)*v[i - 2] + (3*n - 2 + (8*n - 8)*x)*v[i - 1]); 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-c9dce8c25621fdea","steps":["basis A013609","basis A013611"],"edges":["e-0705555781f6cbb3","e-4d9b574196438af5"],"text":"A046716 \u2192 basis A013609 \u2192 basis A013611"},"headline":"A046716 \u2192 basis A013609 \u2192 basis A013611","chain":null}
