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0, 1, -2, 12, -96, 880, -8720, 90752, -975936, 10737152, -120093056, 1360051456, -15556087296, 179424700416, -2084953411584, 24393551634432, -287204585508864, 3400978267127808, -40480500900446208, 484006813958356992, -5810240353159839744, 70001749695581061120
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