This site is supported by donations to The OEIS Foundation.

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A199317 2*6^n+1. 1
 3, 13, 73, 433, 2593, 15553, 93313, 559873, 3359233, 20155393, 120932353, 725594113, 4353564673, 26121388033, 156728328193, 940369969153, 5642219814913, 33853318889473, 203119913336833, 1218719480020993, 7312316880125953, 43873901280755713 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index entries for linear recurrences with constant coefficients, signature (7,-6). FORMULA a(n) = 6*a(n-1)-5. a(n) = 7*a(n-1)-6*a(n-2). G.f.: (3-8*x)/((1-x)*(1-6*x)). PROG (MAGMA) [2*6^n+1: n in [0..30]]; CROSSREFS Sequence in context: A067764 A193930 A063512 * A205776 A132846 A193931 Adjacent sequences:  A199314 A199315 A199316 * A199318 A199319 A199320 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Nov 05 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.