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A006938
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Convert the last term from decimal to binary!
(Formerly M4814)
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10
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OFFSET
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1,1
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COMMENTS
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The number of digits of a(n) are 2, 4, 10, 31, 100, 330, 1093, 3628, 12049, 40023, 132951, 441651, 1467130, 4873698, 16190071, 53782249, 178660761, ... - Robert G. Wilson v, Jul 10 2013
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REFERENCES
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C. Pickover, Mazes for the Mind, St. Martin's Press, NY, 1992, p. 350.
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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MATHEMATICA
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NestList[FromDigits[IntegerDigits[#, 2]]&, 11, 4] (* Harvey P. Dale, Feb 28 2012 *)
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PROG
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(Python)
def agen(an):
while True: yield an; an = int(bin(an)[2:])
g = agen(3)
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CROSSREFS
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For initial terms 2 through 12 see A008559, A006938, A260025, A260024, A260026, A260027, A260028, A260029, A008559 (again), A006938 (again), A260030 respectively.
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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