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101859525000,   86092621875,   56588625000,   28831950000,  11269125000,   3313406250,    708750000,   104062500,    9375000,    390625;\n  9: 387420489, 5811307335, 40679151345, 176491556100, 531627004350, 1180197600750, 2000476784250, 2646576180000, 2769804061875, 2309984578125, 1538780034375, 816844500000, 343017281250, 112425468750, 28134843750, 5189062500, 664453125, 52734375, 1953125;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = (9+15*x+5*x^2)*P(n-1,x) for n >= 1, with P(0,x) = 1.","mathematica":"P[0, x_] := 1;\nP[n_, x_] := P[n, x] = Expand[(9 + 15*x + 5*x^2)*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] = (9 + 15*x + 5*x^2)*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, 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