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A000682 Semimeanders: number of ways a semi-infinite directed curve can cross a straight line n times.
(Formerly M1205 N0464)
+0
11
1, 1, 2, 4, 10, 24, 66, 174, 504, 1406, 4210, 12198, 37378, 111278, 346846, 1053874, 3328188, 10274466, 32786630, 102511418, 329903058, 1042277722, 3377919260, 10765024432, 35095839848, 112670468128, 369192702554, 1192724674590, 3925446804750 (list; graph; listen)
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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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