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A128300
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a(n) = denominator of b(n): b(1)=1; b(n+1) = [b(1);b(2),...,b(n),1], where [...] is a continued fraction of rational terms.
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1
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1, 1, 3, 17, 553, 586897, 659232805921, 832815851066489242864705, 1328480976128962358175251908323023432381302392961, 135239453813936036855424384907720482197952346892608282522206946891967718839233157787733773571369
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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EXAMPLE
| a(5) = the denominator of b(5). b(5) = 1 +1/(2 +1/(4/3 +1/(24/17 +1))) = 768/553.
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MATHEMATICA
| a = {1}; Do[AppendTo[a, FromContinuedFraction[Join[a, {1}]]], {10}]; Denominator[a] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Oct 24 2007
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CROSSREFS
| Cf. A128299.
Sequence in context: A144033 A098138 A009719 * A001601 A061119 A049985
Adjacent sequences: A128297 A128298 A128299 * A128301 A128302 A128303
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KEYWORD
| frac,nonn
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AUTHOR
| Leroy Quet Feb 25 2007
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EXTENSIONS
| More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Oct 24 2007
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