T(n,[ n/2 ]), where T is the array defined in A026105.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =10a(6) =30a(7) =50a(8) =160a(9) =265a(10) =873a(11) =1442a(12) =4851a(13) =7996a(14) =27300a(15) =44928a(16) =155115a(17) =254950a(18) =887910a(19) =1457852a(20) =5112767a(21) =8387170a(22) =29582886a(23) =48492028a(24) =171857127a(25) =281521541a(26) =1001762125a(27) =1640055250a(28) =5856231825a(29) =9582770760