A256131 a(n) = H_n(10,2) where H_n is the n-th hyperoperator.

3, 12, 20, 100, 10000000000

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: A143268 A374072 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