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A056469
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Number of elements in the continued fraction for sum(k=0..n,1/2^2^k).
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4
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2, 3, 4, 6, 10, 18, 34, 66, 130, 258, 514, 1026, 2050, 4098, 8194, 16386, 32770, 65538, 131074, 262146, 524290, 1048578, 2097154, 4194306, 8388610, 16777218, 33554434, 67108866, 134217730, 268435458, 536870914, 1073741826, 2147483650
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..2000
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FORMULA
| a(0)=2, for n>0 a(n) = 2^(n-1)+2 = A052548(n-1)+2.
a(n) = Floor(2^(n-1)+2). - Vincenzo Librandi, Sep 21 2011
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PROG
| (Other) sage: [floor(gaussian_binomial(n, 1, 2)+3) for n in xrange(-1, 32)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 31 2009]
(MAGMA) [Floor(2^(n-1)+2): n in [0..60]]; // Vincenzo Librandi, Sep 21 2011
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CROSSREFS
| Cf. A007400. Apart from initial term, same as A052548. See also A089985.
Sequence in context: A060163 A106511 A024490 * A004047 A093912 A181054
Adjacent sequences: A056466 A056467 A056468 * A056470 A056471 A056472
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KEYWORD
| nonn,easy
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 07 2002
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