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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((648*n - 324 + (918*n^2 + 1566*n - 2025)*x + (360*n^3 + 1836*n^2 - 522*n - 1485)*x^2 + (48*n^4 + 594*n^3 + 465*n^2 - 609*n - 474)*x^3 + (2*n^5 + 63*n^4 + 162*n^3 + 23*n^2 - 186*n - 60)*x^4 + (2*n^5 + 10*n^4 + 14*n^3 - 2*n^2 - 16*n - 8)*x^5)*v[i - 1] - (486 + (972*n + 2106)*x + (594*n^2 + 3348*n + 2754)*x^2 + (108*n^3 + 1566*n^2 + 3672*n + 1764)*x^3 + (6*n^4 + 228*n^3 + 1308*n^2 + 1842*n + 660)*x^4 + (10*n^4 + 140*n^3 + 430*n^2 + 468*n + 144)*x^5 + (4*n^4 + 24*n^3 + 52*n^2 + 48*n + 16)*x^6)*deriv(v[i - 1], x))/(324 + (270*n + 189)*x + (126*n^2 + 54*n + 9)*x^2 + (18*n^3 + 33*n^2 - 9*n - 18)*x^3 + (n^4 + 2*n^3 + n^2)*x^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-ba3bb18490b15e2e","steps":["basis A007318","(\u03b8+1)\u00b2"],"edges":["e-0b9b63070f7f0adc","e-c9162d0502abe241"],"text":"A188440 \u2192 basis A007318 \u2192 (\u03b8+1)\u00b2"},"headline":"A188440 \u2192 basis A007318 \u2192 (\u03b8+1)\u00b2","chain":null}