(Terms in A028286)/2.

Terms

a(0) =3a(1) =8a(2) =4a(3) =43a(4) =20a(5) =5a(6) =98a(7) =63a(8) =25a(9) =161a(10) =88a(11) =6a(12) =357a(13) =249a(14) =606a(15) =155a(16) =43a(17) =7a(18) =1320a(19) =198a(20) =50a(21) =1496a(22) =248a(23) =8a(24) =8723a(25) =6006a(26) =3185a(27) =1274a(28) =371a(29) =74