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 A023444 a(n) = n-2. 9
 -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 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 PROG (PARI) a(n)=n-2 CROSSREFS Cf. A256958, A001057, A000027, A001477, A023443, A023445, ..., A023482, A022958, ..., A022996. Sequence in context: A065358 A062329 A022958 * A248157 A290428 A136868 Adjacent sequences:  A023441 A023442 A023443 * A023445 A023446 A023447 KEYWORD sign,easy AUTHOR STATUS approved

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Last modified December 16 03:34 EST 2018. Contains 318158 sequences. (Running on oeis4.)