Search: id:A083216
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%I A083216
%S A083216 20615674205555510,3794765361567513,24410439567123023,28205204928690536,
%T A083216 52615644495813559,80820849424504095,133436493920317654,
%U A083216 214257343344821749,347693837265139403,561951180609961152
%N A083216 Second-order linear recurrence sequence with a(n) = a(n-1) + a(n-2).
%C A083216 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.
%D A083216 R. L. Graham, Math. Mag. 37, 1964, pp. 322-324.
%D A083216 D. E. Knuth, Math. Mag. 63, 1990, pp. 21-25.
%D A083216 H. S. Wilf, Letters to the Editor, Math. Mag. 63, 1990.
%H A083216 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/
               RecursiveSequences.html">Recursive Sequences</a>
%H A083216 J. W. Nicol, <a href="http://www.combinatorics.org/Volume_6/PostScriptfiles/
               v6i1r44.ps">A Fibonacci-like sequence of composite numbers</a>
%Y A083216 Cf. A000032 (Lucas numbers), A000045 (Fibonacci numbers), A083103, A083104, 
               A083105, A082411.
%Y A083216 Sequence in context: A141621 A098143 A095432 this_sequence A145065 A080127 
               A003941
%Y A083216 Adjacent sequences: A083213 A083214 A083215 this_sequence A083217 A083218 
               A083219
%K A083216 nonn
%O A083216 0,1
%A A083216 Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 23 2003

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