login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074529 a(n) = 2^n + 3^n + 7^n. 1
3, 12, 62, 378, 2498, 17082, 118442, 825858, 5771618, 40373802, 282535322, 1977505938, 13841822738, 96890612922, 678227872202, 4747575891618, 33232973681858, 232630643258442, 1628413985593082, 11398896348158898 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
From Mohammad K. Azarian, Dec 27 2008: (Start)
G.f.: 1/(1-2*x) + 1/(1-3*x) + 1/(1-7*x).
E.g.f.: exp(2*x) + exp(3*x) + exp(7*x). (End)
MATHEMATICA
Table[2^n + 3^n + 7^n, {n, 0, 20}]
LinearRecurrence[{12, -41, 42}, {3, 12, 62}, 20] (* Harvey P. Dale, Mar 29 2020 *)
PROG
(Magma) [2^n + 3^n + 7^n: n in [0..25]]; // Vincenzo Librandi, Jun 11 2011
CROSSREFS
Sequence in context: A074516 A045740 A187820 * A143916 A323630 A020033
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Aug 23 2002
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 30 01:41 EDT 2024. Contains 371282 sequences. (Running on oeis4.)