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A022367
Fibonacci sequence beginning 2, 10.
4
2, 10, 12, 22, 34, 56, 90, 146, 236, 382, 618, 1000, 1618, 2618, 4236, 6854, 11090, 17944, 29034, 46978, 76012, 122990, 199002, 321992, 520994, 842986, 1363980, 2206966, 3570946, 5777912, 9348858, 15126770, 24475628, 39602398, 64078026, 103680424, 167758450, 271438874
OFFSET
0,1
FORMULA
From R. J. Mathar, Mar 11 2011: (Start)
a(n) = 2*A022095(n).
G.f.: 2*(1+4*x)/(1-x-x^2). (End)
a(n) = A147316(n-4) + A000045(n+5). - Giuseppe Coppoletta, Jul 27 2017
a(n) = 11*F(n) + F(n-3). - J. M. Bergot, Jul 19 2017
MATHEMATICA
LinearRecurrence[{1, 1}, {2, 10}, 40] (* Harvey P. Dale, Jun 17 2014 *)
PROG
(PARI) for(n=0, 50, print1(2*(fibonacci(n+2) + 3*fibonacci(n)), ", ")) \\ G. C. Greubel, Aug 27 2017
CROSSREFS
KEYWORD
nonn
EXTENSIONS
More terms from Michel Marcus, Jul 05 2017
STATUS
approved