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Search: id:A110391
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| A110391 |
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a(n) = L(3n)/L(n), where L(n) = Lucas number. |
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+0
9
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| 1, 4, 6, 19, 46, 124, 321, 844, 2206, 5779, 15126, 39604, 103681, 271444, 710646, 1860499, 4870846, 12752044, 33385281, 87403804, 228826126, 599074579, 1568397606, 4106118244, 10749957121, 28143753124, 73681302246, 192900153619
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Subsidiary sequences: a(n) = L((2k+1)*n)/L(n) for k = 2,3, etc. This is the sequence for k =1.
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EXAMPLE
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a(1)=L(3)/L(1)=4/1=4.
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MAPLE
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with(combinat): L:=n->fibonacci(n+2)-fibonacci(n-2): seq(L(3*n)/L(n), n=0..30); (Deutsch)
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CROSSREFS
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Cf. A000204.
Sequence in context: A006534 A064035 A010364 this_sequence A001683 A053892 A013126
Adjacent sequences: A110388 A110389 A110390 this_sequence A110392 A110393 A110394
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KEYWORD
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easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 27 2005
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EXTENSIONS
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Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu) and Erich Friedman (efriedma(AT)stetson.edu), Jul 31 2005
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