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Search: id:A080408
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| 2, 3, 6, 14, 35, 116, 448, 1980, 10098, 57840, 368201, 2578384, 19697486, 163017000, 1452918806, 13874348700, 141322966623, 1529472867448, 17526468199148, 211996227034964, 2699219798770446, 36085910558435148, 505406091697374877
(list; graph; listen)
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OFFSET
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0,1
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LINKS
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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
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a(n) appears to be asymptotic to C*n!*(2/Pi)^n where C=9.27921365277635263761227970562207183019110298580498662908878310... - Benoit Cloitre (benoit7848c(AT)orange.fr) and Mark Hudson (mrmarkhudson(AT)hotmail.com)
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EXAMPLE
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We simply apply the Boustrophedon transform to [2,1,2,1,1,4,1,1,6,1,1,8,1,1,...]
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CROSSREFS
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Cf. A003417, A001113, A080406-A080407.
Sequence in context: A010357 A002995 A093467 this_sequence A001420 A049339 A081293
Adjacent sequences: A080405 A080406 A080407 this_sequence A080409 A080410 A080411
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KEYWORD
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nonn,easy
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AUTHOR
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Mark Hudson (mrmarkhudson(AT)hotmail.com), Feb 17 2003
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