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Fibonacci and Lucas numbers of the form -2^a-3^b-5^c+7^d

open access: yesRevista Integración
In this note we find all Fibonacci and Lucas numbers of the form -2^a-3^b-5^c+7^d where a, b, c, d are non-negative integers, with 0 ≤ max{a, b, c} ≤ d. This result gives an answer to a question posed by Qu, Zeng and Cao.
Sofía Ibarra   +1 more
doaj  

Fibonacci, littler, and the hand: a brief review. [PDF]

open access: yesHand (N Y), 2010
Hutchison AL, Hutchison RL.
europepmc   +1 more source

Meristem size contributes to the robustness of phyllotaxis in Arabidopsis. [PDF]

open access: yesJ Exp Bot, 2015
Landrein B   +7 more
europepmc   +1 more source

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