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Search: id:A144781
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| A144781 |
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Variant of Sylvester's sequence: a(n+1) = a(n)^2 - a(n) + 1, with a(1) = 8 |
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+0
12
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| 8, 57, 3193, 10192057, 103878015699193, 10790642145601683494645152057, 116437957914435303575899742229333045108448631998006179193, 13557798043283806950297045269968250387897834581711367551819275131055206893868524\ 458302302046950954641412419952057
(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) =2.741677474442337767760304453336477418973312819744397509318140002476846832783935678344394661686353109760077601324333^(2^n) a(n+1) = a(n)^2 - a(n) + 1, with a(1) = 8
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MATHEMATICA
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a = {}; k = 8; Do[AppendTo[a, k]; k = k^2 - k + 1, {n, 1, 10}]; a or Table[Round[2.741677474442337767760304453336477418973312819744397509318140002476\ 846832783935678344394661686353109760077601324333^(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: A015453 A002402 A015464 this_sequence A026948 A111585 A055839
Adjacent sequences: A144778 A144779 A144780 this_sequence A144782 A144783 A144784
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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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