@book(HW,
 author       = "G. H. Hardy and E. M. Wright",
 year         = "1979",
 title        = "An introduction to the theory of numbers",
 publisher    = "The Clarendon Press, Oxford University Press",
 address      = "New York",
)
@article(Truc,
 author       = "Kenneth R. Rebman",
 year         = "1975",
 title        = "The sequence: {$1$} {$5$} {$16$} {$45$} {$121$} {$320\dots $} in combinatorics",
 journal      = "Fibonacci Quart.",
 volume       = "13",
 pages        = "51--55",
)
@unpublished(RV,
 author       = "Beno\^{\i }t Rittaud and Laurent Vivier",
 title        = "Circular words and three applications: factors of the Fibonacci word, ${\cal F}$-adic numbers, and the sequence $1$, $5$, $16$, $45$, $121$, $320$,\dots ",
 note         = "To appear in Functiones et Approximatio Commentarii Mathematici",
)
@misc(Sloane,
 author       = "N.J.A. Sloane",
 title        = "Alternate Lucas numbers - 2",
 url          = "http://oeis.org/A004146",
)