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A104769 G.f. -x/(1+x-x^3). 7
0, -1, 1, -1, 0, 1, -2, 2, -1, -1, 3, -4, 3, 0, -4, 7, -7, 3, 4, -11, 14, -10, -1, 15, -25, 24, -9, -16, 40, -49, 33, 7, -56, 89, -82, 26, 63, -145, 171, -108, -37, 208, -316, 279, -71, -245, 524, -595, 350, 174, -769, 1119, -945, 176, 943, -1888, 2064, -1121, -767, 2831, -3952 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

Generating floretion is "jesright".

Pisano period lengths: 1, 7, 13, 14, 24, 91, 48, 28, 39, 168, 120, 182, 183, 336, 312, 56, 288, 273, 180, 168,.. (which differs from A104217 for example at index 23). - R. J. Mathar, Aug 10 2012

LINKS

Table of n, a(n) for n=0..60.

Index entries for linear recurrences with constant coefficients, signature (-1,0,1).

FORMULA

a(n) = -A247917(n-1).

Recurrence: a(n+3) = a(n) - a(n+2); a(0) = 0, a(1) = -1, a(2) = 1.

a(n+1) - a(n) = ((-1)^(n+1))*a(n+5).

a(n) = ((-1)^n)*A050935(n+1) = ((-1)^n)*A078013(n+2).

a(n) = A104771(n) - A104770(n).

PROG

(PARI) a(n)=([0, 1, 0; 0, 0, 1; 1, 0, -1]^n*[0; -1; 1])[1, 1] \\ Charles R Greathouse IV, Jun 11 2015

CROSSREFS

Apart from signs, essentially the same as A050935 and A078013.

Cf. A247917 (negative).

Cf. A000931, A057597.

Sequence in context: A176971 A247917 A050935 * A078013 A086461 A047089

Adjacent sequences:  A104766 A104767 A104768 * A104770 A104771 A104772

KEYWORD

sign,easy,less

AUTHOR

Creighton Dement, Mar 24 2005

EXTENSIONS

Edited by Ralf Stephan, Apr 05 2009

STATUS

approved

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Last modified November 30 05:31 EST 2020. Contains 338781 sequences. (Running on oeis4.)