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%I #13 Apr 26 2022 04:50:05
%S 1,111,11001,1003201,31100301,2133233301,131030232301,11032113332301,
%T 322313212202301,22032322210302301,100022230001210102301,
%U 123202121121121130102301,232213121102313132210102301,1032130122202213111001210102301
%N Base-4 representation of A000422(n).
%F a(n) = A007090(A000422(n)).
%o (Ruby)
%o def A(k, n)
%o (1..n).map{|i| (1..i).to_a.reverse.join.to_i.to_s(k).to_i}
%o end
%o p A(4, 20)
%Y Cf. A000422, A353110, A353111, A353113, A353114, A353115, A353116, A353117.
%Y Cf. A007090, A353104.
%K nonn,base
%O 1,2
%A _Seiichi Manyama_, Apr 24 2022