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Search: id:A144747
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| A144747 |
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Recurence sequence a(n)=a(n-1)^2-a(n-1)-1 a(0)=7 |
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+0
6
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| 41, 1639, 2684681, 7207509387079, 51948191564824694742765161, 2698614606855723567054656642857156538246857652590759, 72825207963350714702364964566712418552576648671489499323022762534557026654938552\ 73950765616767079605321
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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)=7
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MATHEMATICA
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a = {}; k = 7; 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, A144744, A144745, A144746, A144748
Sequence in context: A094455 A076462 A163050 this_sequence A009985 A147521 A049676
Adjacent sequences: A144744 A144745 A144746 this_sequence A144748 A144749 A144750
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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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