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

 

Logo

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!)
A139740 a(n) = 11^n - 2^n. 3
0, 9, 117, 1323, 14625, 161019, 1771497, 19487043, 214358625, 2357947179, 25937423577, 285311668563, 3138428372625, 34522712135739, 379749833566857, 4177248169382883, 45949729863506625, 505447028499162699, 5559917313491969337, 61159090448414022003 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..300

Index entries for linear recurrences with constant coefficients, signature (13,-22).

FORMULA

a(n) = 13*a(n-1) - 22*a(n-2). - Vincenzo Librandi, Jun 02 2011

a(n) = A001020(n) - A000079(n). - Michel Marcus, Feb 28 2022

a(n) = 9 * A016135(n-1), n > 0. - Bernard Schott, Mar 09 2022

PROG

(Sage) [11^n - 2^n for n in range(0, 20)] # Zerinvary Lajos, Jun 05 2009

(Magma) [11^n-2^n: n in [0..30]]; // Vincenzo Librandi, Jun 02 2011

(PARI) a(n)=11^n-2^n \\ Charles R Greathouse IV, Mar 26 2012

(Python) [11**n-2**n for n in range(20)] # Gennady Eremin, Mar 05 2022

CROSSREFS

Cf. A016135.

Cf. A000079, A001020.

Sequence in context: A253655 A092913 A022607 * A221442 A196663 A292843

Adjacent sequences: A139737 A139738 A139739 * A139741 A139742 A139743

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, May 20 2008

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 4 19:07 EST 2022. Contains 358563 sequences. (Running on oeis4.)