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A080406
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Boustrophedon transform of the continued fraction of Pi (cf. A001203).
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3
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3, 10, 32, 73, 457, 1994, 6407, 29489, 148253, 852592, 5420543, 37975111, 290066507, 2400720769, 21396506651, 204322668174, 2081209926313, 22523982873141, 258105780607144, 3121989826825492, 39750408190737416
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| J. Millar, N. J. A. Sloane and N. E. Young, A new operation on sequences: the Boustrophedon on transform, J.Combin. Theory, 17A 44-54 1996 (Abstract, pdf, ps).
N. J. A. Sloane, Transforms
Index entries for sequences related to boustrophedon transform
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FORMULA
| a(n) appears to be asymptotic to C*n!*(2/Pi)^n where C=136.651536367325329682973604897976758877614262731284965133228708820... - Benoit Cloitre (benoit7848c(AT)orange.fr) and Mark Hudson (mrmarkhudson(AT)hotmail.com)
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EXAMPLE
| We simply apply the Boustrophedon transform to [3,7,15,1,292,1,1,1,...]
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CROSSREFS
| Cf. A001203, A000796.
Sequence in context: A034016 A001403 A072136 * A036682 A104270 A038731
Adjacent sequences: A080403 A080404 A080405 * A080407 A080408 A080409
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KEYWORD
| nonn,easy
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AUTHOR
| Mark Hudson (mrmarkhudson(AT)hotmail.com), Feb 17 2003
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