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A074510
a(n) = 1^n + 3^n + 8^n.
0
3, 12, 74, 540, 4178, 33012, 262874, 2099340, 16783778, 134237412, 1073800874, 8590111740, 68720008178, 549757408212, 4398051294074, 35184386437740, 281475019757378, 2251799942825412, 18014398896902474, 144115189238117340
OFFSET
0,1
FORMULA
From Mohammad K. Azarian, Dec 26 2008: (Start)
G.f.: 1/(1-x) + 1/(1-3*x) + 1/(1-8*x).
E.g.f.: e^x + e^(3*x) + e^(8*x). (End)
a(n) = 11*a(n-1) - 24*a(n-2) + 14 with a(0)=3, a(1)=12. - Vincenzo Librandi, Jul 21 2010
MATHEMATICA
Table[1^n + 3^n + 8^n, {n, 0, 20}]
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Aug 23 2002
STATUS
approved