login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A022958 2-n. 19
2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35, -36, -37, -38, -39, -40, -41, -42, -43, -44, -45, -46, -47, -48, -49, -50, -51, -52, -53, -54, -55 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..57.

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (2,-1).

FORMULA

G.f.: (2-3x)/(1-x)^2; E.g.f.: exp(x)*(2-x); - Paul Barry, Mar 31 2007

a(n)=2*a(n-1)-a(n-2); a(0)=2, a(1)=1. [From Philippe Deléham, Nov 03 2008]

PROG

(PARI) a(n)=n-2 \\ Charles R Greathouse IV, Jun 11 2015

CROSSREFS

Sequence in context: A065358 A062329 * A023444 A248157 A290428 A136868

Adjacent sequences:  A022955 A022956 A022957 * A022959 A022960 A022961

KEYWORD

sign,easy

AUTHOR

N. J. A. Sloane.

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.

License Agreements, Terms of Use, Privacy Policy .

Last modified August 23 03:42 EDT 2017. Contains 290958 sequences.