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 A006938 Convert the last term from decimal to binary! (Formerly M4814) 10
 3, 11, 1011, 1111110011, 1000010001110100011000101111011 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The next term (a(5)) has 100 digits. - Harvey P. Dale, Feb 28 2012 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 Log(a(n))/Log(a(n-1)) =~1/Log_10(2) = A020862. - Robert G. Wilson v, Jul 10 2013 REFERENCES 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). LINKS MATHEMATICA NestList[FromDigits[IntegerDigits[#, 2]]&, 11, 4] (* Harvey P. Dale, Feb 28 2012 *) CROSSREFS For initial terms 2 through 12 see A008559, A006938, A260025, A260024, A260026, A260027, A260028, A260029, A008559 (again), A006938 (again), A260030 respectively. Sequence in context: A337415 A264725 A088579 * A124984 A287432 A034797 Adjacent sequences:  A006935 A006936 A006937 * A006939 A006940 A006941 KEYWORD nonn,base AUTHOR EXTENSIONS Added a(1)=3. - N. J. A. Sloane, Jul 14 2015 STATUS approved

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Last modified September 30 05:03 EDT 2020. Contains 337435 sequences. (Running on oeis4.)