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A016907 (5n+4)^11. 1

%I #15 Sep 08 2022 08:44:41

%S 4194304,31381059609,4049565169664,116490258898219,1521681143169024,

%T 12200509765705829,70188843638032384,317475837322472439,

%U 1196683881290399744,3909821048582988049,11384956040305711104

%N (5n+4)^11.

%C If 5n+4 is a perfect square, that is for n=0,1,9,12,28,33,57,64,..., a(n)=A010810(j), where the indices j are listed in A047221. - _R. J. Mathar_, Apr 22 2008.

%H Vincenzo Librandi, <a href="/A016907/b016907.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (12,-66,220,-495,792,-924,792,-495,220,-66,12,-1).

%F G.f.: (x^11 +362797044*x^10 +280958106005*x^9 +14192390602560*x^8 +157922022917730*x^7 +565509776420088*x^6 +753319100251602*x^5 +384167580654720*x^4 +69965704049565*x^3 +3673269278420*x^2 +31330727961*x +4194304) / (x -1)^12. [_Colin Barker_, Feb 22 2013]

%o (Magma) [(5*n+4)^11: n in [0..30]]; // _Vincenzo Librandi_, May 03 2011

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_.

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Last modified May 4 05:01 EDT 2024. Contains 372227 sequences. (Running on oeis4.)