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1, 7, 30, 148, 610, 2823, 11690, 52952, 221094, 992190, 4173708, 18642456, 78906516, 351537963, 1495497690, 6652572976, 28420125190, 126308309058, 541492971140, 2405203008440, 10341957297084, 45920564571398, 197952999374468
(list;
graph;
refs;
listen;
history;
text;
internal format)
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