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Revision History for A322171

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A322171

Expansion of x*(3 + 5*x + x^2 + x^3)/((1 - x)^2*(1 + x^2)).
(history; published version)

#29 by Amiram Eldar at Sat Oct 21 11:50:17 EDT 2023

STATUS

reviewed

approved

#28 by Michel Marcus at Sat Oct 21 11:35:49 EDT 2023

STATUS

proposed

reviewed

#27 by Michel Marcus at Sat Oct 21 11:35:44 EDT 2023

STATUS

editing

proposed

#26 by Michel Marcus at Sat Oct 21 11:35:40 EDT 2023

LINKS

<a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (2, -2, 2, -1).

STATUS

reviewed

editing

#25 by Joerg Arndt at Sat Oct 21 11:35:13 EDT 2023

STATUS

proposed

reviewed

#24 by Jon E. Schoenfield at Sat Oct 21 11:32:14 EDT 2023

STATUS

editing

proposed

#23 by Jon E. Schoenfield at Sat Oct 21 11:32:11 EDT 2023

FORMULA

a(n) = (1/2)*(10*n - (1+2*i)*(-i)^n - (1-2*i)*i^n), where i is the imaginary unity= sqrt(-1).

STATUS

approved

editing

#22 by Charles R Greathouse IV at Thu Sep 08 08:46:23 EDT 2022

PROG

(MAGMAMagma) I:=[3, 11, 17, 19]; [n le 4 select I[n] else 2*Self(n-1)-2*Self(n-2)+2*Self(n-3)-Self(n-4): n in [1..60]]; // Vincenzo Librandi, Dec 06 2018

Discussion

Thu Sep 08

08:46

OEIS Server: https://oeis.org/edit/global/2944

#21 by N. J. A. Sloane at Tue Feb 12 17:09:39 EST 2019

STATUS

proposed

approved

#20 by Muniru A Asiru at Thu Dec 06 10:23:38 EST 2018

STATUS

editing

proposed