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%I #7 Sep 18 2019 20:01:27
%S 1,4,20,111,616,3464,19656,112370,646272,3735324,21678696,126256361,
%T 737513400,4319243760,25352692620,149108262264,878502339712,
%U 5184007871160,30633757767144,181253849830625,1073680925191128,6366778606697544,37790436148353900,224505805610383128
%N a(n) = T(2n-1,n), where T is the array in A026148.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E Offset corrected and more terms from _Sean A. Irvine_, Sep 18 2019
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