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%I #7 Sep 18 2019 19:55:20
%S 1,2,16,120,946,7644,62831,522784,4389779,37123554,315735122,
%T 2697813440,23140821753,199142458570,1718554831623,14866697304316,
%U 128879838356309,1119350439620210,9737942597361615,84842252277338304,740178198190767003,6465231396756806046
%N a(n) = T(3n,n), where T is the array in A026148.
%K nonn
%O 0,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Sep 18 2019
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