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A073773
Number of plane binary trees of size n+2 and height n.
+0
3
0, 0, 0, 6, 40, 152, 480, 1376, 3712, 9600, 24064, 58880, 141312, 333824, 778240, 1794048, 4096000, 9273344, 20840448, 46530560, 103284736, 228065280, 501219328, 1096810496, 2390753280, 5192548352, 11240734720, 24259854336
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Maintained by
N. J. A. Sloane
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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.
AT&T Labs Research
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