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0, 8, 66, 522, 3772, 25138, 157212, 935140, 5343160, 29541450, 158920172, 835390460, 4305416136, 21812985652, 108875244952, 536326527048, 2611304032624, 12582098181466, 60058408242252, 284257070075212
(list;
graph;
refs;
listen;
history;
text;
internal format)
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