|
| |
|
|
A074515
|
|
1^n + 4^n + 9^n.
|
|
2
| |
|
|
3, 14, 98, 794, 6818, 60074, 535538, 4799354, 43112258, 387682634, 3487832978, 31385253914, 282446313698, 2541932937194, 22877060890418, 205892205836474, 1853024483819138, 16677198879535754, 150094704016475858
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
FORMULA
| G.f.: 1/(1-x)+1/(1-4*x)+1/(1-9*x). E.g.f.: e^x+e^(4*x)+e^(9*x). [From Mohammad K. Azarian (azarian(AT)evansville.edu), Dec 26 2008]
a(n)=13*a(n-1)-36*a(n-2)+24 with a(0)=3, a(1)=14 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 21 2010]
|
|
|
MATHEMATICA
| Table[1^n + 4^n + 9^n, {n, 0, 20}]
|
|
|
CROSSREFS
| Cf. A001550, A001576, A034513, A001579, A074501 - A074580.
Cf. A052539.
Sequence in context: A113181 A136461 A007470 * A038051 A132008 A140963
Adjacent sequences: A074512 A074513 A074514 * A074516 A074517 A074518
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 23 2002
|
| |
|
|
