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A017030 a(n) = (7*n + 4)^2. 2

%I #19 Sep 08 2022 08:44:41

%S 16,121,324,625,1024,1521,2116,2809,3600,4489,5476,6561,7744,9025,

%T 10404,11881,13456,15129,16900,18769,20736,22801,24964,27225,29584,

%U 32041,34596,37249,40000,42849,45796

%N a(n) = (7*n + 4)^2.

%H Vincenzo Librandi, <a href="/A017030/b017030.txt">Table of n, a(n) for n = 0..10000</a>

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

%F a(n) = A017029(n)^2. - _Michel Marcus_, Nov 11 2013

%p A017030:=n->(7*n+4)^2; seq(A017030(n), n=0..100); # _Wesley Ivan Hurt_, Nov 11 2013

%t Table[(7n+4)^2, {n,0,100}] (* _Wesley Ivan Hurt_, Nov 11 2013 *)

%t LinearRecurrence[{3,-3,1},{16,121,324},40] (* _Harvey P. Dale_, May 25 2019 *)

%o (Magma) [(7*n+4)^2: n in [0..40] ]; // _Vincenzo Librandi_, Jul 16 2011

%o (PARI) a(n)=(7*n+4)^2 \\ _Charles R Greathouse IV_, Jun 17 2017

%K nonn,easy

%O 0,1

%A _N. J. A. Sloane_

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Last modified May 5 14:32 EDT 2024. Contains 372275 sequences. (Running on oeis4.)