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 A161770 n 1's followed by three 0's. 1
 1000, 11000, 111000, 1111000, 11111000, 111111000, 1111111000, 11111111000, 111111111000, 1111111111000, 11111111111000, 111111111111000, 1111111111111000, 11111111111111000, 111111111111111000, 1111111111111111000, 11111111111111111000, 111111111111111111000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Sequence A159741 written in base 2. LINKS Table of n, a(n) for n=1..18. Index entries for linear recurrences with constant coefficients, signature (11,-10). FORMULA a(n) = 1000*(10^n-1)/9 = 1000 * A002275(n). G.f.: 1000*x/((10*x-1)*(x-1)). MATHEMATICA Table[FromDigits[PadLeft[{0, 0, 0}, n, 1]], {n, 4, 20}] (* Harvey P. Dale, Aug 07 2023 *) CROSSREFS Cf. A002275, A159741. Sequence in context: A017511 A326639 A017643 * A004632 A277397 A250449 Adjacent sequences: A161767 A161768 A161769 * A161771 A161772 A161773 KEYWORD nonn,easy,base AUTHOR Jaroslav Krizek, Jun 18 2009 EXTENSIONS Edited by Charles R Greathouse IV, Oct 12 2009 STATUS approved

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Last modified September 24 13:04 EDT 2023. Contains 365579 sequences. (Running on oeis4.)