The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A199028 (9*11^n-1)/2. 2
 4, 49, 544, 5989, 65884, 724729, 7972024, 87692269, 964614964, 10610764609, 116718410704, 1283902517749, 14122927695244, 155352204647689, 1708874251124584, 18797616762370429, 206773784386074724, 2274511628246821969 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..900 Index entries for linear recurrences with constant coefficients, signature (12,-11). FORMULA a(n) = 11*a(n-1)+5. a(n) = 12*a(n-1)-11*a(n-2). G.f.: (4 + x)/(1 - 12*x + 11*x^2). - Vincenzo Librandi, Jan 04 2013 MATHEMATICA CoefficientList[Series[(4 + x)/(1 - 12 x + 11 x^2), {x, 0, 30}], x] (* Vincenzo Librandi, Jan 04 2013 *) PROG (MAGMA) [(9*11^n-1)/2: n in [0..20]]; CROSSREFS Sequence in context: A173038 A198971 A273230 * A189146 A086094 A055793 Adjacent sequences:  A199025 A199026 A199027 * A199029 A199030 A199031 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Nov 02 2011 STATUS approved

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

Last modified February 22 14:33 EST 2020. Contains 332136 sequences. (Running on oeis4.)