| 1, -2, 5, -15, 52, -200, 827, -3596, 16191, -74702, 350794, -1669439, 8029728, -38963552, 190499461, -937550897, 4641253152, -23096403422, 115475977145, -579799302750, 2922325238788, -14780595276064, 74995317703482, -381625745964018, 1947147485751919
(list; graph; listen)
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