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v[1] = 121 + 1056*x + 1296*x^2; for(n = 1, N, my(i = n + 1); v[i] = ((1331 + (4356*n + 13068)*x + (1584*n^2 + 14256*n + 26928)*x^2 + (1728*n^2 + 10368*n + 15552)*x^3)*v[i - 1])/(121 + (396*n + 660)*x + (144*n^2 + 576*n + 576)*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-108b34f10b7468f4","steps":["basis A013611","(\u03b8+1)\u00b2"],"edges":["e-8f18b93eb5dfe7b3","e-a182c8cf0117ad75"],"text":"A038281 \u2192 basis A013611 \u2192 (\u03b8+1)\u00b2"},"headline":"A038281 \u2192 basis A013611 \u2192 (\u03b8+1)\u00b2","chain":null}