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A027118 a(n) = A027113(n, 2n). 0

%I

%S 1,2,3,7,16,39,98,252,659,1747,4682,12662,34505,94644,261069,723707,

%T 2014952,5631875,15796210,44444302,125405217,354765866,1006003375,

%U 2858939669,8141135778,23225997936,66376634429,190000938785

%N a(n) = A027113(n, 2n).

%K nonn

%O 0,2

%A _Clark Kimberling_

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Last modified August 10 04:38 EDT 2020. Contains 336368 sequences. (Running on oeis4.)