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1, 4, 14, 44, 130, 364, 990, 2540, 6514, 15640, 38434, 87940, 209166, 460224, 1063818, 2266576, 5105788, 10573476, 23296326, 47097284, 101395460, 200414252, 424162586, 823203108, 1705499044, 3248816636, 6647515550, 12492112904
(list;
graph;
refs;
listen;
history;
text;
internal format)
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