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A145550
Number of distinct values taken by 10^10^...^10 (with n 10's and parentheses inserted in all possible ways).
+0
9
1, 1, 2, 4, 9, 20, 48, 115, 286, 719, 1842, 4766, 12486, 32972, 87807, 235365, 634792, 1720976, 4688090, 12824381, 35216108, 97037603, 268229329, 743562936, 2066686470, 5758171390, 16079351152
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Maintained by
N. J. A. Sloane
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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
AT&T Labs Research
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