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A081072
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Fibonacci(4n) + 3, or Fibonacci(2n+2)*Lucas(2n-2).
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1
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3, 6, 24, 147, 990, 6768, 46371, 317814, 2178312, 14930355, 102334158, 701408736, 4807526979, 32951280102, 225851433720, 1548008755923, 10610209857726, 72723460248144, 498454011879267, 3416454622906710, 23416728348467688
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OFFSET
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0,1
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REFERENCES
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Hugh C. Williams, Edouard Lucas and Primality Testing, John Wiley and Sons, 1998, p. 75.
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LINKS
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FORMULA
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a(n) = 8a(n-1) - 8a(n-2) + a(n-3).
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MAPLE
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with(combinat): for n from 0 to 40 do printf(`%d, `, fibonacci(4*n)+3) od: # James A. Sellers, Mar 05 2003
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PROG
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(Maxima) makelist(fib(4*n)+3, n, 0, 30); /* Martin Ettl, Nov 11 2012 */
(PARI) Vec((-3+18*x)/((x-1)*(x^2-7*x+1)) + O(x^30)) \\ Michel Marcus, Dec 23 2014
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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