This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A214221 #11 Jul 07 2012 20:44:44 %S A214221 2,1,47,439204,23725150497407,132878596168524201724674011, %T A214221 1384619022984618483717737087933569992335566082, %U A214221 481682208844384447843365760878364816732549453120338354329505085763436029 %N A214221 (n^3)-th Lucas number (beginning at 2). %C A214221 This is to A182149 (n^3)-th Fibonacci number, as A000032 is to A000045. %H A214221 Alois P. Heinz, <a href="/A214221/b214221.txt">Table of n, a(n) for n = 0..16</a> %F A214221 a(n) = A000032(A000578(n)). %F A214221 a(n) = term (1,1) in the 2 X 1 matrix [0,1; 1,1]^(n^3) * [2;1]. - _Alois P. Heinz_, Jul 07 2012 %e A214221 a(2) = L(2^3) = L(8) = 47. %p A214221 a:= n-> (<<0|1>, <1|1>>^(n^3). <<2, 1>>)[1, 1]: %p A214221 seq (a(n), n=0..7); # _Alois P. Heinz_, Jul 07 2012 %t A214221 f[n_] := LucasL[n^3]; Array[f, 8, 0] (* _Robert G. Wilson v_, Jul 07 2012 *) %Y A214221 Cf. A000032, A000045, A000578, A166169, A182149. %K A214221 nonn,easy %O A214221 0,1 %A A214221 _Jonathan Vos Post_, Jul 07 2012