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A271553 a(n) = H_{n-1}(n,n). 2
1, 2, 4, 9, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
H is the hyperoperation function see A054871 for more information.
This sequence is a shifted version of the weak Ackermann numbers H_n(n,n).
LINKS
CROSSREFS
Cf. A189896 (H_n(n,n)), A054871.
Sequence in context: A162116 A162117 A162109 * A067603 A269739 A065299
KEYWORD
nonn,bref
AUTHOR
Natan Arie Consigli, Apr 09 2016
STATUS
approved

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Last modified May 24 15:40 EDT 2024. Contains 372778 sequences. (Running on oeis4.)