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v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = ((32*n^3 + 48*n^2 - 42*n + 2 + (24*n^3 + 96*n^2 - 30*n - 4)*x + (48*n^2 + 34*n - 14)*x^2 + (24*n - 8)*x^3)*v[i - 1] - (20*n^2 + 50*n + 15 + (36*n^2 + 130*n + 62)*x + (16*n^2 + 112*n + 95)*x^2 + (32*n + 64)*x^3 + 16*x^4)*deriv(v[i - 1], x))/(8*n^3 + 8*n^2 - 8*n + (16*n^2 - 2*n)*x + 8*n*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-79ebafb266da3b41","steps":["basis A007318","D+1"],"edges":["e-1a8887aa0d003bc9","e-fe594bf5932b3324"],"text":"A172431 \u2192 basis A007318 \u2192 D+1"},"headline":"A172431 \u2192 basis A007318 \u2192 D+1","chain":null}