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a(n) = Sum_{i=0..floor(n/2)} T(2i,n-2i), array T as in A049723.
0

%I #9 Aug 07 2021 01:13:11

%S 1,4,18,31,73,105,204,249,412,501,760,865,1207,1376,1864,2070,2688,

%T 2951,3740,4068,5059,5413,6612,7057,8421,8974,10620,11247,13114,13835,

%U 16034,16812,19267,20221,22994,23973,27092,28240

%N a(n) = Sum_{i=0..floor(n/2)} T(2i,n-2i), array T as in A049723.

%K nonn

%O 0,2

%A _Clark Kimberling_