| 1, 0, 0, 2, 10, 33, 100, 290, 795, 2098, 5353, 13270, 32058, 75681, 174982, 396969, 885035, 1941744, 4197219, 8947798, 18829981, 39148311, 80467194, 163624700, 329349740, 656560785, 1296916079, 2539570658, 4931698805, 9501297338
(list; graph; listen)
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