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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

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Last modified September 1 15:01 EDT 2014. Contains 246307 sequences.