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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083421 a(n)=2*5^n-2^n. 2
 1, 8, 46, 242, 1234, 6218, 31186, 156122, 780994, 3905738, 19530226, 97654202, 488277154, 2441398058, 12207014866, 61035123482, 305175715714, 1525878775178, 7629394269106, 38146972131962, 190734862232674 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Third binomial transform of A014551(n+1) LINKS Index entries for linear recurrences with constant coefficients, signature (7,-10) FORMULA G.f.: (1+x)/((1-2x)(1-5x)); e.g.f.: 2exp(5x)-exp(2x). a(0)=1, a(1)=8, a(n)=7*a(n-1)-10*a(n-2). - Harvey P. Dale, Dec 03 2015 MATHEMATICA Table[2*5^n-2^n, {n, 0, 20}] (* or *) LinearRecurrence[{7, -10}, {1, 8}, 30] (* Harvey P. Dale, Dec 03 2015 *) CROSSREFS Sequence in context: A026867 A026885 A052244 * A113992 A352094 A037070 Adjacent sequences: A083418 A083419 A083420 * A083422 A083423 A083424 KEYWORD easy,nonn AUTHOR Paul Barry, Apr 29 2003 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 March 26 02:13 EDT 2023. Contains 361529 sequences. (Running on oeis4.)