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A014221
a(n+1) = 2^a(n) with a(0) = 0. This is the Ackermann function A_3(n+1) as defined in the Comments line..
+0
37
0, 1, 2, 4, 16, 65536
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.
AT&T Labs Research
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