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1, 1, 3, 3, 3, 12, 21, 30, 66, 138, 264, 525, 1029, 2460, 5079, 10344, 22197, 50421, 108966, 229827, 498432, 1136190, 2495118, 5390319, 11879355, 27012990, 60008826, 131877372, 292070991, 670433502, 1500384540, 3327218859, 7449719727, 17089051899
(list;
graph;
refs;
listen;
history;
text;
internal format)
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