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 A369591 #11 Jan 27 2024 13:47:39
%S A369591 0,0,1,2,5,14,35,90,245,644,1716,4707,12727,34683,96174,264784,732785,
%T A369591 2051338,5719684,16007081,45160093,127106181,358743903,1018566177,
%U A369591 2887666445,8204375034
%N A369591 a(n) = number of Yamanouchi words over the alphabet {1, 2, 3} of length n that start with 3.
%Y A369591 Column 3 in A369589.
%Y A369591 Number of Yamanouchi words over the alphabet {1, 2, 3} is given by A001006, and by A217323 for the words containing 3.
%Y A369591 Cf. A238728, A369590.
%K A369591 nonn,more
%O A369591 1,4
%A A369591 _Max Alekseyev_, Jan 26 2024