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!)
A074532 a(n) = 2^n + 4^n + 5^n. 1
3, 11, 45, 197, 897, 4181, 19785, 94637, 456417, 2215781, 10815225, 53024477, 260921937, 1287820181, 6371967465, 31591352717, 156882923457, 780119453381, 3883417004505, 19348364759357, 96466944316977, 481235206811381 (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/(1-4*x) + 1/(1-5*x).
E.g.f.: exp(2*x) + exp(4*x) + exp(5*x). (End)
MATHEMATICA
Table[2^n + 4^n + 5^n, {n, 0, 20}]
PROG
(Magma) [2^n + 4^n + 5^n: n in [0..25]]; // Vincenzo Librandi, Jun 11 2011
CROSSREFS
Sequence in context: A151129 A151130 A216949 * A049186 A049160 A191243
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 April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)