A175129 a(0)=1, a(1)=3; for n>=2, a(n) = 3^A042950(n-2).

1, 3, 9, 27, 729, 531441, 282429536481, 79766443076872509863361, 6362685441135942358474828762538534230890216321

Offset

0,2

Links

Table of n, a(n) for n=0..8.

Crossrefs

Cf. A042950, A167182, A172489, A173260.

Sequence in context: A018924 A380159 A061582 * A336793 A102558 A361986

Adjacent sequences: A175126 A175127 A175128 * A175130 A175131 A175132

Keyword

nonn

Author

Giovanni Teofilatto, Feb 17 2010

Extensions

Revised by N. J. A. Sloane, Jun 20 2021

Status

approved