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  6270566400000,  1567641600000,   268738560000,   30233088000,   2015539200,    60466176;\n  9: 204800000000000, 675840000000000, 1013760000000000, 912384000000000, 547430400000000, 229920768000000, 68976230400000, 14780620800000, 2217093120000, 221709312000, 13302558720, 362797056;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = (20+6*x)*P(n-1,x) for n >= 1, with P(0,x) = 400 + 240*x + 36*x^2.","mathematica":"P[0, x_] := 400 + 240*x + 36*x^2;\nP[n_, x_] := P[n, x] = Expand[(20 + 6*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] = 400 + 240*x + 36*x^2; for(n = 1, N, my(i = n + 1); v[i] = (20 + 6*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-c11cb6bca0e3e7dc","steps":["basis A007318","x \u21a6 x+1"],"edges":["e-37fb8ca4839f71ce","e-061f13a10a85161a"],"text":"A038284 \u2192 basis A007318 \u2192 x \u21a6 x+1"},"headline":"A038284 \u2192 basis A007318 \u2192 x \u21a6 x+1","chain":null}