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1, 2, 14, 106, 834, 6732, 55289, 459742, 3858524, 32618022, 277326906, 2369003910, 20315879480, 174798617778, 1508225204024, 13045333585950, 113076177711662, 981982906771978, 8542048596893910, 74416362792323370, 649168980344148876, 5669882132589477798
(list;
graph;
refs;
listen;
history;
text;
internal format)
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