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v[1] = 1; v[2] = 2 + 6*x; for(n = 3, N, my(i = n); v[i] = (-(n - 2 + (3*n - 6)*x + (3*n - 6)*x^2 + (n - 2)*x^3)*v[i - 2] + (n + (2*n + 4)*x + (n + 4)*x^2)*v[i - 1])/(1 + x)); 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-3272d5bc697b9cb4","steps":["basis A013611","x \u21a6 x/(x+1)"],"edges":["e-91983714a64825b5","e-b72b98d42e22ec6d"],"text":"A094816 \u2192 basis A013611 \u2192 x \u21a6 x/(x+1)"},"headline":"A094816 \u2192 basis A013611 \u2192 x \u21a6 x/(x+1)","chain":null}