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%I
%S 1,3,8,24,75,237,755,2421,7804,25264,82081,267487,873970,2862038,
%T 9391137,30869167,101627704,335049772,1106003560,3655124296,
%U 12092095945,40042017815,132712302538,440207294382,1461259979347,4853983051617,16134233746913,53660996850207
%N a(n) = A047080(2n,n+1).
%Y Cf. A047080, A047085, A047086, A047088.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E Corrected and extended by _Sean A. Irvine_, May 11 2021
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