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!)
 A156796 a(n) = 81*n - 22. 2
 59, 140, 221, 302, 383, 464, 545, 626, 707, 788, 869, 950, 1031, 1112, 1193, 1274, 1355, 1436, 1517, 1598, 1679, 1760, 1841, 1922, 2003, 2084, 2165, 2246, 2327, 2408, 2489, 2570, 2651, 2732, 2813, 2894, 2975, 3056, 3137, 3218, 3299, 3380, 3461, 3542 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 Index entries for linear recurrences with constant coefficients, signature (2,-1). FORMULA From Vincenzo Librandi, Mar 01 2012: (Start) G.f.: x*(59 + 22*x)/(1-x)^2. a(n) = 2*a(n-1) - a(n-2). (End) MATHEMATICA LinearRecurrence[{2, -1}, {59, 140}, 50] (* Vincenzo Librandi, Mar 01 2012 *) PROG (PARI) a(n)=81*n-22 \\ Charles R Greathouse IV, Dec 23 2011 (MAGMA) I:=[59, 140]; [n le 2 select I[n] else 2*Self(n-1)-Self(n-2): n in [1..50]]; // Vincenzo Librandi, Mar 01 2012 CROSSREFS Sequence in context: A129480 A044310 A044691 * A183348 A106756 A102168 Adjacent sequences:  A156793 A156794 A156795 * A156797 A156798 A156799 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Feb 16 2009 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 18 09:15 EST 2020. Contains 332011 sequences. (Running on oeis4.)