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Search: id:A083216
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| A083216 |
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Second-order linear recurrence sequence with a(n) = a(n-1) + a(n-2). |
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+0
7
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| 20615674205555510, 3794765361567513, 24410439567123023, 28205204928690536, 52615644495813559, 80820849424504095, 133436493920317654, 214257343344821749, 347693837265139403, 561951180609961152
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OFFSET
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0,1
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COMMENT
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a(0) = 20615674205555510, a(1) = 3794765361567513. This is a second-order linear recurrence sequence with a(0) and a(1) coprime that does not contain any primes. It was found by Herbert Wilf in 1990.
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REFERENCES
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R. L. Graham, Math. Mag. 37, 1964, pp. 322-324.
D. E. Knuth, Math. Mag. 63, 1990, pp. 21-25.
H. S. Wilf, Letters to the Editor, Math. Mag. 63, 1990.
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LINKS
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Tanya Khovanova, Recursive Sequences
J. W. Nicol, A Fibonacci-like sequence of composite numbers
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CROSSREFS
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Cf. A000032 (Lucas numbers), A000045 (Fibonacci numbers), A083103, A083104, A083105, A082411.
Sequence in context: A141621 A098143 A095432 this_sequence A145065 A080127 A003941
Adjacent sequences: A083213 A083214 A083215 this_sequence A083217 A083218 A083219
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KEYWORD
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nonn
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AUTHOR
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Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 23 2003
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