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 A108047 Concatenation of the previous pair of numbers, with the first two terms both 1. 5
 1, 1, 11, 111, 11111, 11111111, 1111111111111, 111111111111111111111, 1111111111111111111111111111111111, 1111111111111111111111111111111111111111111111111111111, 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS The Fibonacci numbers, A000045, represented in base 1 (see A000042). LINKS FORMULA a(n) = (10^A000045(n)-1)/9. a(n) = A000042(A000045(n)). EXAMPLE The third term is 11 which is the concatenation of the first two terms 1 and 1. CROSSREFS Column b=1 of A214326. Column k=1 of A214679. Cf. A037842, A131293. Sequence in context: A015468 A037842 A131293 * A144784 A030175 A263805 Adjacent sequences:  A108044 A108045 A108046 * A108048 A108049 A108050 KEYWORD nonn,easy,base AUTHOR Parthasarathy Nambi, Jun 01 2005 EXTENSIONS Edited by Jason Kimberley, Dec 15 2012 STATUS approved

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Last modified August 25 02:59 EDT 2019. Contains 326318 sequences. (Running on oeis4.)