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a(n) = T(2n-1,n), array T given by A048225.
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%I #10 Jun 07 2021 01:16:45

%S 3,3,16,36,59,89,131,185,250,323,400,488,582,681,790,905,1024,1147,

%T 1277,1419,1565,1716,1874,2036,2204,2375,2554,2738,2926,3123,3328,

%U 3541,3764,3991,4229,4473,4722,4976,5232,5493,5757,6030,6314,6607,6906,7207,7517

%N a(n) = T(2n-1,n), array T given by A048225.

%F a(n) = A048224(2*n) - A048224(n). - _Sean A. Irvine_, Jun 06 2021

%Y Cf. A048224.

%K nonn

%O 1,1

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Jun 06 2021