OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (17,-94,168).
FORMULA
From Mohammad K. Azarian, Dec 30 2008: (Start)
G.f.: 1/(1-4*x) + 1/(1-6*x) + 1/(1-7*x).
E.g.f.: exp(4*x) + exp(6*x) + exp(7*x). (End)
a(n) = 17*a(n-1) - 94*a(n-2) + 168*a(n-3); a(0)=3, a(1)=17, a(2)=101. - Harvey P. Dale, Jun 22 2013
MATHEMATICA
Table[4^n + 6^n + 7^n, {n, 0, 20}]
LinearRecurrence[{17, -94, 168}, {3, 17, 101}, 30] (* Harvey P. Dale, Jun 22 2013 *)
PROG
(Magma) [4^n + 6^n + 7^n: n in [0..20]]; // Vincenzo Librandi, Aug 25 2011
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Aug 23 2002
STATUS
approved