A023444 - OEIS

A023444

a(n) = n-2.

-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

COMMENTS

The months September to December (9 to 12) are sometimes found in old written French to be abbreviated as 7bre, 8bre, 9bre and 10bre. See Jeff Steiner link. - Michel Marcus, Sep 26 2017

LINKS

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

Tanya Khovanova, Recursive Sequences

Jeff Steiner's Americans in France, Abbreviated Months (7bre, 8bre, 9bre, 10bre and Xbre)

Robert G. Wilson v, American English names for the numbers from 0 to 100999 without spaces or hyphens.

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

FORMULA

G.f.: -(2-3*x)/(1-x)^2. - Bruno Berselli, Sep 02 2011

a(n) = 2*a(n-1) - a(n-2). a(n) = -A022958(n). - M. F. Hasler, Apr 18 2015

MATHEMATICA

Range[-2, 100] (* Wesley Ivan Hurt, Sep 10 2023 *)

PROG