| 1, 3, 22, 346, 5100, 53504, 411041, 2471091, 12244665, 51924492, 193733585, 649448814, 1988025385, 5628317525, 14888914321, 37110706136, 87756490312, 198017040530, 428428858514, 892492579595, 1796484842799, 3504861873102, 6645228329464, 12273264853180
(list; graph; listen)
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