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A005372
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a(n) = L(L(n+1)+1), where L(n) are Lucas numbers A000032.
(Formerly M2628)
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2
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3, 7, 11, 47, 322, 9349, 1860498, 10749957122, 12360848946698171, 82123488809519507169850807, 627376215338105766356982006981782561278127, 31842547163971605907183271059340725709462269514762215168643703957079
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OFFSET
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0,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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MAPLE
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L:= n-> (<<0|1>, <1|1>>^(n). <<2, 1>>)[1, 1]:
a:= n-> L(L(n+1)+1):
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MATHEMATICA
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PROG
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(Magma) [Lucas(1+Lucas(n+1)): n in [0..15]]; // G. C. Greubel, Nov 14 2022
(SageMath) [lucas_number2(1+lucas_number2(n+1, 1, -1), 1, -1) for n in range(15)] # G. C. Greubel, Nov 14 2022
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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