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10: -362880, -9797760, -117573120, -823011840, -3703553280, -11110659840, -22221319680, -28570268160, -21427701120, -7142567040;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = -(n-1+(3*n-3)*x)*P(n-1,x) for n >= 2, with P(1,x) = 1.","mathematica":"P[1, x_] := 1;\nP[n_, x_] := P[n, x] = Expand[-(n - 1 + (3*n - 3)*x)*P[n - 1, x]];\nTable[CoefficientList[P[n, x], x], {n, 1, 10}] // Flatten","pari":"P(N) = {my(v = vector(N)); v[1] = 1; for(n = 2, N, my(i = n); v[i] = -(n - 1 + (3*n - 3)*x)*v[i - 1]); 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-cf1765de6ac2bd4b","steps":["basis A013610"],"edges":["e-46ba877ad14f98f3"],"text":"basis-map coefficients of A021012 \u2192 basis A013610"},"headline":"basis-map coefficients of A021012 \u2192 basis A013610","chain":null}