login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074574 5^n + 7^n + 8^n. 1
3, 20, 138, 980, 7122, 52700, 395418, 2998820, 22932642, 176524460, 1365982698, 10616089460, 82804904562, 647865527420, 5082373099578, 39962451176900, 314860495170882, 2485193267125580, 19646626804658058, 155533156747557140 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..300

Index entries for linear recurrences with constant coefficients, signature (20,-131,280).

FORMULA

G.f.: 1/(1-5*x)+1/(1-7*x)+1/(1-8*x). E.g.f.: e^(5*x)+e^(7*x)+e^(8*x). [From Mohammad K. Azarian, Dec 30 2008]

MATHEMATICA

Table[5^n + 7^n + 8^n, {n, 0, 20}]

PROG

(MAGMA) [5^n + 7^n + 8^n: n in [0..20]]; // Vincenzo Librandi, May 20 2011

CROSSREFS

Cf. A001550, A001576, A034513, A001579, A074501 - A074580.

Sequence in context: A056306 A056298 A114479 * A073514 A163065 A082143

Adjacent sequences:  A074571 A074572 A074573 * A074575 A074576 A074577

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 | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified November 22 03:50 EST 2014. Contains 249803 sequences.