The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A199930

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A199930

Trisection 0 of A199803.
(history; published version)

#22 by Wesley Ivan Hurt at Wed Mar 08 13:38:48 EST 2023

STATUS

editing

approved

#21 by Wesley Ivan Hurt at Wed Mar 08 13:38:38 EST 2023

CROSSREFS

Cf. A199744, A199803.

STATUS

approved

editing

#20 by N. J. A. Sloane at Wed Dec 27 10:42:23 EST 2017

STATUS

proposed

approved

#19 by Colin Barker at Wed Dec 27 10:38:22 EST 2017

STATUS

editing

proposed

#18 by Colin Barker at Wed Dec 27 10:37:59 EST 2017

LINKS

Colin Barker, <a href="/A199930/b199930.txt">Table of n, a(n) for n = 0..1000</a>

FORMULA

From Colin Barker, Dec 27 2017: (Start)

G.f.: (1 - x + 2*x^2) / (1 + x + 5*x^2 - x^3 + x^4).

a(n) = -a(n-1) - 5*a(n-2) + a(n-3) - a(n-4) for n>3.

(End)

PROG

(PARI) Vec((1 - x + 2*x^2) / (1 + x + 5*x^2 - x^3 + x^4) + O(x^40)) \\ Colin Barker, Dec 27 2017

STATUS

approved

editing

#17 by Peter Luschny at Wed Dec 27 10:09:13 EST 2017

STATUS

proposed

approved

#16 by Michel Marcus at Wed Dec 27 06:27:11 EST 2017

STATUS

editing

proposed

#15 by Michel Marcus at Wed Dec 27 06:27:06 EST 2017

LINKS

Michael D. Hirschhorn, Michael D., <a href="http://www.fq.math.ca/Papers1/43-4/paper43-4-5.htmlpdf">Non-trivial intertwined second-order recurrence relations</a>, Fibonacci Quart. 43 (2005), no. 4, 316-325. See p. 324.

#14 by Michel Marcus at Wed Dec 27 00:51:55 EST 2017

LINKS

<a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (-1,-5,1,-1).

STATUS

proposed

editing

#13 by Jon E. Schoenfield at Tue Dec 26 22:56:57 EST 2017

STATUS

editing

proposed