The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A175602 8*(10^n-3). 1
 56, 776, 7976, 79976, 799976, 7999976, 79999976, 799999976, 7999999976, 79999999976, 799999999976, 7999999999976, 79999999999976, 799999999999976, 7999999999999976, 79999999999999976, 799999999999999976 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..100 Index entries for linear recurrences with constant coefficients, signature (11,-10). FORMULA G.f.: 8*x*(7 + 20*x)/((1 - x)*(1 - 10*x)). - Vincenzo Librandi, Aug 23 2014 a(n) = 11*a(n-1) - 10*a(n-2). - Vincenzo Librandi, Aug 23 2014 MATHEMATICA Table[8 (10^n - 3), {n, 20}] (* or *) CoefficientList[Series[8 (7 + 20 x)/((1 - x) (1 - 10 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Aug 23 2014 *) LinearRecurrence[{11, -10}, {56, 776}, 20] (* Harvey P. Dale, Sep 26 2018 *) PROG (Magma) [8*(10^n-3): n in [1..20]]; // Vincenzo Librandi, Aug 23 2014 CROSSREFS Sequence in context: A201098 A190419 A105940 * A227059 A285155 A278197 Adjacent sequences:  A175599 A175600 A175601 * A175603 A175604 A175605 KEYWORD nonn AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 26 04:47 EST 2022. Contains 358353 sequences. (Running on oeis4.)