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A256131 a(n) = H_n(10,2) where H_n is the n-th hyperoperator. 4
3, 12, 20, 100, 10000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

See A054871 for definitions and key links.

Sequence can be also be seen as a(0) = 3, a(1) = 12, a(n) = H_{n-1}(10,10) for n>1. - Natan Arie' Consigli, Apr 22 2015; edited by Danny Rorabaugh, Oct 20 2015

LINKS

Table of n, a(n) for n=0..4.

Wikipedia, Hyperoperation

EXAMPLE

a(0) = H_0(10,2) = 2+1  = 3;

a(1) = H_1(10,2) = 10+2 = 12;

a(2) = H_2(10,2) = 10*2   = 10+10 = 20;

a(3) = H_3(10,2) = 10^2   = 10*10 = 100;

a(4) = H_4(10,2) = 10^^2  = 10^10 = 10000000000;

a(5) = H_5(10,2) = 10^^^2 = 10^^10 = 10^10^10^10^10^10^10^10^10^10 = ... .

CROSSREFS

Cf. A054871.

Sequence in context: A212760 A143268 A193558 * A080767 A043465 A074276

Adjacent sequences:  A256128 A256129 A256130 * A256132 A256133 A256134

KEYWORD

nonn

AUTHOR

Natan Arie' Consigli, Mar 15 2015

EXTENSIONS

First terms corrected and hyperoperator notation implemented by Danny Rorabaugh, Oct 20 2015

STATUS

approved

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Last modified November 11 18:50 EST 2019. Contains 329031 sequences. (Running on oeis4.)