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Search: id:A144744
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| A144744 |
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Recurence sequence a(n)=a(n-1)^2-a(n-1)-1 a(0)=4 |
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+0
6
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| 11, 109, 11771, 138544669, 19194625169774891, 368433635408155743950638444286989, 135743343700069833946317076518699443524748244656296738254150399131
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a(0)=3 is the smallest integer generating decreasing sequence of the form a(n)=a(n-1)^2-a(n-1)-1
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FORMULA
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a(n)=a(n-1)^2-a(n-1)-1 and a(0)=4
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MATHEMATICA
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a = {}; k = 4; Do[k = k^2 - k - 1; AppendTo[a, k], {n, 1, 10}]; a
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CROSSREFS
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A000058, A082732, A144743, A144745, A144746, A144747, A144748
Sequence in context: A054320 A124290 A094703 this_sequence A103542 A044343 A132123
Adjacent sequences: A144741 A144742 A144743 this_sequence A144745 A144746 A144747
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KEYWORD
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nonn
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Sep 20 2008
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