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Search: id:A144785
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| A144785 |
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Variant of Sylvester's sequence: a(n+1) = a(n)^2 - a(n) + 1, with a(1) = 12 |
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+0
12
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| 12, 133, 17557, 308230693, 95006159799029557, 9026170399758739819525199160586693, 81471752085480849000657595909467634426991447160798281416700808089557
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n) =3.39277252592669675143137065018187376847206615308598784654603692312172475924599026837940758013759324881455503678006543568111163817496672898^(2^n) a(n+1) = a(n)^2 - a(n) + 1, with a(1) = 11
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MATHEMATICA
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a = {}; r = 12; Do[AppendTo[a, r]; r = r^2 - r + 1, {n, 1, 10}]; a or Table[Round[3.392772525926696751431370650181873768472066153085987846546036923121\ 72475924599026837940758013759324881455503678006543568111163817496672898^(2^n)], {n, 1, 8}] (*Artur Jasinski*)
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CROSSREFS
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A000058, A082732, A144779, A144780, A144781, A144782, A144783, A144784, A144785, A144786, A144787, A144788
Sequence in context: A016123 A015457 A015469 this_sequence A085938 A161124 A030023
Adjacent sequences: A144782 A144783 A144784 this_sequence A144786 A144787 A144788
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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 21 2008
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