(Terms in A029647)/2.

Terms

a(0) =2a(1) =3a(2) =7a(3) =10a(4) =4a(5) =25a(6) =5a(7) =22a(8) =56a(9) =91a(10) =27a(11) =78a(12) =147a(13) =6a(14) =105a(15) =225a(16) =336a(17) =330a(18) =561a(19) =7a(20) =45a(21) =176a(22) =891a(23) =1254a(24) =52a(25) =221a(26) =2145a(27) =8a(28) =273a(29) =2002