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A275203 Hyperoperations using consecutive integers. 0
1, 2, 4, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(4) is too large to display. The number of decimal digits in (the number of decimal digits in a(4)) is approximately 64^64*log[10](64), that is, about 7.1*10^115. - Robert Israel, Jul 19 2016

LINKS

Table of n, a(n) for n=0..3.

Wikipedia, Hyperoperation

FORMULA

a(n) = H_n(a(n-1),n), where H_n is the n-th hyperoperation.

EXAMPLE

a(0) = H_0(null,0) = 0+1 = 1.

a(1) = H_1(1,1) = 1+1 = 2.

a(2) = H_2(2,2) = 2*2 = 4.

a(3) = H_3(4,3) = 4^3 = 64.

a(4) = H_4(64,4) = 64^(64^(64^64)).

CROSSREFS

Cf. A189896, A264930.

Sequence in context: A245164 A009744 A124592 * A232444 A088079 A118993

Adjacent sequences:  A275200 A275201 A275202 * A275204 A275205 A275206

KEYWORD

nonn

AUTHOR

Tyler Skywalker, Jul 19 2016

STATUS

approved

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Last modified June 2 18:09 EDT 2020. Contains 334787 sequences. (Running on oeis4.)