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A000799
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a(n) = floor(2^n / n).
(Formerly M0239 N0082)
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21
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2, 2, 2, 4, 6, 10, 18, 32, 56, 102, 186, 341, 630, 1170, 2184, 4096, 7710, 14563, 27594, 52428, 99864, 190650, 364722, 699050, 1342177, 2581110, 4971026, 9586980, 18512790, 35791394, 69273666, 134217728, 260301048, 505290270, 981706810, 1908874353
(list;
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listen;
history;
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internal format)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..300
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MAPLE
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seq(floor(2^n/n), n=1..40); # Muniru A Asiru, Oct 20 2018
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MATHEMATICA
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Table[Quotient[2^n, n], {n, 60}] (* Vladimir Joseph Stephan Orlovsky, May 07 2011 *)
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PROG
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(PARI) a(n)=1<<n\n
(MAGMA) [2^n div n : n in [1..40]]; // Vincenzo Librandi, Oct 14 2018
(GAP) List([1..40], n->Int(2^n/n)); # Muniru A Asiru, Oct 20 2018
(Python) for n in range(1, 40): print(int(2**n / n), end=", ") # Stefano Spezia, Oct 20 2018
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CROSSREFS
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Cf. A000801, A053638, A065482, A082482, A071354.
Sequence in context: A060827 A188288 A064355 * A185030 A063823 A182027
Adjacent sequences: A000796 A000797 A000798 * A000800 A000801 A000802
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane
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STATUS
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approved
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