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10460353203,    56950811883,    132885227727,    172258628535,    133978933305,     62523502209,     16209796869,     1801088541;\n  8:  282429536481,  1757339338104,   4783868198172,   7441572752712,   7234862398470,   4501692159048,   1750658061852,   389035124856,   37822859361;\n  9: 7625597484987, 53379182394909, 166068567450828, 301383696484836, 351614312565642, 273477798662166, 141803303010012, 47267767670004, 9190954824723, 794280046581;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = (27+21*x)*P(n-1,x) for n >= 1, with P(0,x) = 1.","mathematica":"P[0, x_] := 1;\nP[n_, x_] := P[n, x] = Expand[(27 + 21*x)*P[n - 1, x]];\nTable[CoefficientList[P[n, x], x], {n, 0, 9}] // Flatten","pari":"P(N) = {my(v = vector(N + 1)); v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = (27 + 21*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 - 1, v[i])))};\nT(9)","reading":{"first_row":0,"offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-f485cd65a8f8089f","steps":["basis A013610","reverse"],"edges":["e-b7b3e04e23eb02df","e-35c51cfc492cb26d"],"text":"A038335 \u2192 basis A013610 \u2192 reverse"},"headline":"A038335 \u2192 basis A013610 \u2192 reverse","chain":null}