| 2, 2, 2, 4, 6, 10, 18, 32, 56, 102, 186, 340, 630, 1170, 2182, 4096, 7710, 14560, 27594, 52428, 99858, 190650, 364722, 699040, 1342176, 2581110, 4971008, 9586980, 18512790, 35791358, 69273666, 134217728, 260300986, 505290270, 981706806
(list; graph; listen)
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