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v[1] = 1; for(n = 2, N, my(i = n); v[i] = ((4*n^3 - 2*n^2 - 2*n + (11*n^3 - 13*n^2 + 44*n - 24)*x + (15*n^3 - 111*n^2 + 318*n - 132)*x^2 + (34*n^3 - 356*n^2 + 790*n - 288)*x^3 + (62*n^3 - 502*n^2 + 932*n - 312)*x^4 + (51*n^3 - 327*n^2 + 534*n - 168)*x^5 + (15*n^3 - 81*n^2 + 120*n - 36)*x^6)*v[i - 1] + ((12*n^2 + 18*n - 12)*x + (22*n^2 + 212*n - 102)*x^2 - (62*n^2 - 770*n + 324)*x^3 - (228*n^2 - 1320*n + 516)*x^4 - (272*n^2 - 1190*n + 444)*x^5 - (146*n^2 - 548*n + 198)*x^6 - (30*n^2 - 102*n + 36)*x^7)*deriv(v[i - 1], x) + ((20*n - 8)*x^2 + (115*n - 46)*x^3 + (275*n - 110)*x^4 + (350*n - 140)*x^5 + (250*n - 100)*x^6 + (95*n - 38)*x^7 + (15*n - 6)*x^8)*deriv(deriv(v[i - 1], x), x))/(4*n^3 - 2*n^2 - 2*n + (12*n^3 - 6*n^2 - 6*n)*x + (12*n^3 - 6*n^2 - 6*n)*x^2 + (4*n^3 - 2*n^2 - 2*n)*x^3)); 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-5c0c5bce3aee8449","steps":["reverse","x \u21a6 x/(x+1)"],"edges":["e-5d51438768cc4177","e-1396f8e6d6b44eea"],"text":"A391045 \u2192 reverse \u2192 x \u21a6 x/(x+1)"},"headline":"A391045 \u2192 reverse \u2192 x \u21a6 x/(x+1)","chain":null}