A255340 a(n) = H_n(4,3) where H_n is the n-th hyperoperator.

4, 7, 12, 64, 13407807929942597099574024998205846127479365820592393377723561443721764030073546976801874298166903427690031858186486050853753882811946569946433649006084096

Offset

0,1

Comments

See A054871 for definitions and key links.

Links

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

Example

a(0) = H_0(4,3) = 3+1 = 4;
a(1) = H_1(4,3) = 4+3 = 7;
a(2) = H_2(4,3) = 4*3 = 12;
a(3) = H_3(4,3) = 4^3 = 64;
a(4) = H_4(4,3) = 4^^3 = 4^4^4 = 4^256 = ... ;
a(5) = H_5(4,3) = 4^^^3 = 4^^4^^4 = 4^^(4^4^4^4) = 4^^(4^4^256) = ... .

Crossrefs

Cf. A054871.

Sequence in context: A183336 A102953 A111157 * A272251 A169700 A162957

Adjacent sequences: A255337 A255338 A255339 * A255341 A255342 A255343

Keyword

nonn

Author

Natan Arie Consigli, Apr 18 2015

Extensions

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

Status

approved