(Terms in A029617)/2.

Terms

a(0) =4a(1) =13a(2) =7a(3) =20a(4) =45a(5) =10a(6) =161a(7) =112a(8) =50a(9) =13a(10) =273a(11) =162a(12) =63a(13) =588a(14) =435a(15) =225a(16) =16a(17) =1023a(18) =660a(19) =2178a(20) =1683a(21) =396a(22) =111a(23) =19a(24) =3861a(25) =507a(26) =130a(27) =8151a(28) =4004a(29) =637