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0, 3, 9, 81, 81, 4617, 18225, 24057, 1056321, 4468041, 40212369, 180512793, 1624615137, 8091189225, 72820703025, 420293834937, 2372089560705, 4422146601609, 90579297748689, 510533809732953, 938645847533601, 19416287947991337, 108935739610788465, 585556544970294777
(list;
graph;
refs;
listen;
history;
text;
internal format)
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