A013845 a(n) = 7^(5*n + 4).

2401, 40353607, 678223072849, 11398895185373143, 191581231380566414401, 3219905755813179726837607, 54116956037952111668959660849, 909543680129861140820205019889143, 15286700631942576193765185769276826401

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..100

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (16807).

Formula

a(n+1) = 16807*a(n). - Harvey P. Dale, Sep 29 2015

Mathematica

7^(5*Range[0, 20]+4) (* or *) NestList[16807#&, 2401, 20]

Prog

(Magma) [7^(5*n+4): n in [0..15]]; // Vincenzo Librandi, Jul 08 2011

Crossrefs

Sequence in context: A226092 A097015 A222461 * A352730 A031776 A251774

Adjacent sequences: A013842 A013843 A013844 * A013846 A013847 A013848

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved