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v[1] = 1; v[2] = 1; v[3] = 8*x; for(n = 4, N, my(i = n); v[i] = (((4*n^3 - 24*n^2 + 44*n - 24)*x + (9*n^6 - 101*n^5 + 461*n^4 - 1095*n^3 + 1426*n^2 - 964*n + 264)*x^2)*v[i - 2] + ((n^2 - 3*n + 2)*x + (4*n^4 - 23*n^3 + 42*n^2 - 25*n + 2)*x^2 + (4*n^6 - 58*n^5 + 313*n^4 - 837*n^3 + 1190*n^2 - 860*n + 248)*x^3)*deriv(v[i - 2], x) - ((n^4 - 6*n^3 + 12*n^2 - 9*n + 2)*x^2 - (4*n^5 - 32*n^4 + 101*n^3 - 158*n^2 + 123*n - 38)*x^3 + (4*n^5 - 33*n^4 + 107*n^3 - 170*n^2 + 132*n - 40)*x^4)*deriv(deriv(v[i - 2], x), x) - (n^4 - 7*n^3 + 17*n^2 - 17*n + 6 - (4*n^5 - 40*n^4 + 156*n^3 - 296*n^2 + 272*n - 96)*x)*v[i - 1] + ((2*n^4 - 15*n^3 + 39*n^2 - 41*n + 15)*x - (4*n^5 - 36*n^4 + 124*n^3 - 204*n^2 + 160*n - 48)*x^2)*deriv(v[i - 1], x))/(n^4 - 9*n^3 + 30*n^2 - 44*n + 24)); 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-3ffff24fcb4f40a0","steps":["(\u03b8+1)\u00b2"],"edges":["e-404a8e815c57c4e9"],"text":"A334218 \u2192 (\u03b8+1)\u00b2"},"headline":"A334218 \u2192 (\u03b8+1)\u00b2","chain":null}