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 A074450 #29 Jul 21 2021 17:46:43 %S A074450 0,0,1,4,12,40,144,512,1813,6528,23808,87380,322560,1198080,4473647, %T A074450 16777216,63160320,238605640,904200192,3435973836,13089411609, %U A074450 49977753600,191219367936,733007751680,2814749599332,10825959997440,41699995927744,160842843834660,621186153185280 %N A074450 Let x = RootOf(z^2 + z + 1) and y = 1+x. Number of 4-ary Lyndon words of length n over GF(4) with trace 1 and subtrace x. %C A074450 Also the number of 4-ary Lyndon words of length n over GF(4) with trace 1 and subtrace y. Also the number of 4-ary Lyndon words of length n over GF(4) with trace x and subtrace 1. Also the number of 4-ary Lyndon words of length n over GF(4) with trace x and subtrace x. Also the number of 4-ary Lyndon words of length n over GF(4) with trace y and subtrace 1. Also the number of 4-ary Lyndon words of length n over GF(4) with trace y and subtrace y. %C A074450 Is this a duplicate of A074032? - _R. J. Mathar_, Dec 15 2020 %H A074450 Frank Ruskey, <a href="http://combos.org/TSlyndonF4">4-ary Lyndon words with given trace and subtrace over GF(4)</a> %Y A074450 Cf. A074446, A074447, A074448, A074449. %Y A074450 Cf. A054660, A073995, A073996, A073997, A073998, A073999. %K A074450 nonn %O A074450 1,4 %A A074450 _Frank Ruskey_ and Nate Kube, Aug 23 2002 %E A074450 Terms a(16) and beyond from _Andrey Zabolotskiy_, Jul 21 2021