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A054977
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a(0)=2, a(n)=1, n >= 1.
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11
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2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Arises in Gilbreath-Proth conjecture - see A036262.
a(n) is also the continued fraction for (3+sqrt(5))/2 [From Enrique Perez Herrero (psychgeometry(AT)gmail.com), May 16 2010]
a(n) is also the denominator for odd Bernoulli Numbers. [From Enrique Perez Herrero (psychgeometry(AT)gmail.com), Jul 17 2010]
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LINKS
| Daniele A. Gewurz and Francesca Merola, Sequences realized as Parker vectors ..., J. Integer Seqs., Vol. 6, 2003.
Eric Weisstein's World of Mathematics, Harmonic Expansion
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FORMULA
| a(n)=A027642(2n+1) [From Enrique Perez Herrero (psychgeometry(AT)gmail.com), Jul 17 2010]
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MATHEMATICA
| Contribution from Enrique Perez Herrero (psychgeometry(AT)gmail.com), May 16 2010: (Start)
A054977[1]:=2;
A054977[n_]:=1; (End)
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CROSSREFS
| Cf. A036262, A054978.
Cf. A027642, A002445 [From Enrique Perez Herrero (psychgeometry(AT)gmail.com), Jul 17 2010]
Sequence in context: A194325 A025452 A194337 * A078315 A156264 A160322
Adjacent sequences: A054974 A054975 A054976 * A054978 A054979 A054980
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KEYWORD
| nonn,mult
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AUTHOR
| Henry W. Gould (gould(AT)math.wvu.edu), May 29 2000
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