a(n) = T(n,[ n/2 ]), where T is the array defined in A026082.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =16a(7) =28a(8) =93a(9) =156a(10) =518a(11) =864a(12) =2932a(13) =4861a(14) =16709a(15) =27600a(16) =95849a(17) =157899a(18) =552749a(19) =908768a(20) =3201848a(21) =5256009a(22) =18616751a(23) =30523044a(24) =108592239a(25) =177865347a(26) =635175153a(27) =1039511496a(28) =3724193120a(29) =6090715215