T(n,[ n/2 ]), T given by A027907.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =10a(5) =15a(6) =50a(7) =77a(8) =266a(9) =414a(10) =1452a(11) =2277a(12) =8074a(13) =12727a(14) =45474a(15) =71955a(16) =258570a(17) =410346a(18) =1481108a(19) =2355962a(20) =8533660a(21) =13599915a(22) =49402850a(23) =78855339a(24) =287134346a(25) =458917850a(26) =1674425300a(27) =2679183405a(28) =9792273690a(29) =15683407785