(Terms in A029607)/2.

Terms

a(0) =4a(1) =12a(2) =13a(3) =7a(4) =25a(5) =20a(6) =24a(7) =45a(8) =10a(9) =40a(10) =98a(11) =154a(12) =161a(13) =112a(14) =50a(15) =13a(16) =138a(17) =252a(18) =315a(19) =273a(20) =162a(21) =63a(22) =60a(23) =390a(24) =567a(25) =588a(26) =435a(27) =225a(28) =16a(29) =957