The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A228707 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A228707

G.f.: (1-3*x+5*x^2-5*x^3+5*x^4-5*x^5+5*x^6-3*x^7+x^8)/((1-x)^4*(1+x^4)*(1+x^2)^2).
(history; published version)

#14 by Charles R Greathouse IV at Thu Sep 08 08:46:05 EDT 2022

PROG

(MAGMAMagma) m:=50; R<x>:=PowerSeriesRing(Integers(), m); Coefficients(R!((1-3*x+5*x^2-5*x^3+5*x^4-5*x^5+5*x^6-3*x^7+x^8)/((1-x)^4*(1+x^4)*(1+x^2)^2))); // Vincenzo Librandi, Sep 07 2013

Discussion

Thu Sep 08

08:46

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

#13 by R. J. Mathar at Tue Apr 21 13:33:43 EDT 2015

STATUS

editing

approved

#12 by R. J. Mathar at Tue Apr 21 13:33:26 EDT 2015

REFERENCES

E. Kirkman, J. Kuzmanovich and J. J. Zhang, Invariants of (-1)-Skew Polynomial Rings under Permutation Representations, arXiv preprint arXiv:1305.3973, 2013

LINKS

E. Kirkman, J. Kuzmanovich and J. J. Zhang, <a href="http://arxiv.org/abs/1305.3973">Invariants of (-1)-Skew Polynomial Rings under Permutation Representations</a>, arXiv preprint arXiv:1305.3973, 2013

STATUS

approved

editing

#11 by Bruno Berselli at Sat Sep 07 17:00:30 EDT 2013

STATUS

editing

approved

#10 by Bruno Berselli at Sat Sep 07 17:00:13 EDT 2013

PROG

(MAGMA) m:=50; R<x>:=PowerSeriesRing(Integers(), m); Coefficients(R!( (1-x+x^2)*(1-2 3*x+25*x^2-5*x^3+25*x^4-25*x^5+5*x^6-3*x^7+x^8)/((1+-x^2)^24*(1-+x)^4)*(1+x^42)^2))); // Vincenzo Librandi, Sep 07 2013

#9 by Bruno Berselli at Sat Sep 07 16:58:48 EDT 2013

FORMULA

G.f.: (1-x+x^2)*(1-2 *x+2*x^2-x^3+2*x^4-2*x^5+x^6)/((1+x^2)^2*(1-x)^4*(1+x^4)).

KEYWORD

nonn,easy,new

#8 by Bruno Berselli at Sat Sep 07 16:57:50 EDT 2013

PROG

(MAGMA) m:=50; R<x>:=PowerSeriesRing(Integers(), m); Coefficients(R!( (1-x+x^2)*(1-32 *x+52*x^2-5*x^3+52*x^4-52*x^5+5*x^6-3*x^7+x^8)/((1-+x^2)^42*(1+-x)^4)*(1+x^24))^2)); // Vincenzo Librandi, Sep 07 2013

STATUS

proposed

editing

#7 by Vincenzo Librandi at Sat Sep 07 02:46:10 EDT 2013

STATUS

editing

proposed

#6 by Vincenzo Librandi at Sat Sep 07 02:46:00 EDT 2013

PROG

(MAGMA) m:=50; R<x>:=PowerSeriesRing(Integers(), m); Coefficients(R!(1-3*x+5*x^2-5*x^3+5*x^4-5*x^5+5*x^6-3*x^7+x^8)/((1-x)^4*(1+x^4)*(1+x^2)^2)); // Vincenzo Librandi, Sep 07 2013

STATUS

proposed

editing

#5 by Vincenzo Librandi at Sat Sep 07 01:08:54 EDT 2013

STATUS

editing

proposed