|
| |
|
|
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
|
| |
|
|
