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%I #7 Sep 24 2019 21:19:42
%S 1,1,5,27,145,796,4438,25034,142479,816620,4706977,27256963,158450461,
%T 924129535,5404960900,31689099660,186188338689,1096001511849,
%U 6462416487070,38161656273410,225653893420214,1335936968552131,7917871096128978,46975164555309282,278951672249192025
%N a(n) = T(2n,n), where T is the array in A026268.
%K nonn
%O 0,3
%A _Clark Kimberling_
%E Corrected and extended by _Sean A. Irvine_, Sep 24 2019
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