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A212262
a(n) = 3^n + Fibonacci(n).
3
1, 4, 10, 29, 84, 248, 737, 2200, 6582, 19717, 59104, 177236, 531585, 1594556, 4783346, 14349517, 43047708, 129141760, 387423073, 1162265648, 3486791166, 10460364149, 31381077320, 94143207484, 282429582849, 847288684468, 2541865949722, 7625597681405
OFFSET
0,2
FORMULA
G.f.: (1-2*x)*(1+2*x)/((1-3*x)*(1-x-x^2)).
MATHEMATICA
Table[3^n + Fibonacci[n], {n, 0, 27}]
PROG
(PARI) for(n=0, 27, print1(3^n+fibonacci(n)", "));
(Magma) [3^n+Fibonacci(n): n in [0..27]];
(Sage) [3^n +fibonacci(n) for n in (0..30)] # G. C. Greubel, Jul 05 2021
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Bruno Berselli, May 08 2012
STATUS
approved