The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A214778 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A214778

a(n) = 3*a(n-1) + 6*a(n-2) + a(n-3), with a(0) = 3, a(1) = 3, and a(2) = 21.
(history; published version)

#43 by Joerg Arndt at Thu Oct 03 04:08:42 EDT 2019

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approved

#42 by Michel Marcus at Thu Oct 03 03:45:20 EDT 2019

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#41 by Michel Marcus at Thu Oct 03 03:45:16 EDT 2019

LINKS

Roman Witula, <a href="httphttps://www.mini.pw.edudoi.pl/~demmath/archive/dm45_4/galleysorg/310.pdf1515/dema-2013-0418">Ramanujan Type Trigonometric Formulae</a>, Demonstratio Math. 45 (2012) 779-796.

<a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3, 6, 1).

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approved

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#40 by Alois P. Heinz at Wed Feb 20 12:19:24 EST 2019

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proposed

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#39 by Georg Fischer at Wed Feb 20 12:14:35 EST 2019

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editing

proposed

#38 by Georg Fischer at Wed Feb 20 12:14:08 EST 2019

KEYWORD

sign,nonn,easy

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approved

editing

Discussion

Wed Feb 20

12:14

Georg Fischer: All terms in the lin. rec. are positive.

#37 by Charles R Greathouse IV at Wed Jul 20 11:07:42 EDT 2016

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editing

approved

#36 by Charles R Greathouse IV at Wed Jul 20 11:07:39 EDT 2016

PROG

(PARI) polsym(x^3 - 3*x^2 - 6*x - 1, 30) \\ Charles R Greathouse IV, Jul 20 2016

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approved

editing

#35 by N. J. A. Sloane at Wed Apr 20 05:07:00 EDT 2016

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proposed

approved

#34 by Michel Marcus at Wed Apr 20 04:31:00 EDT 2016

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editing

proposed