Odd-indexed terms of A129026.

Terms

a(0) =0a(1) =108a(2) =600a(3) =1932a(4) =4752a(5) =9900a(6) =18408a(7) =31500a(8) =50592a(9) =77292a(10) =113400a(11) =160908a(12) =222000a(13) =299052a(14) =394632a(15) =511500a(16) =652608a(17) =821100a(18) =1020312a(19) =1253772a(20) =1525200a(21) =1838508a(22) =2197800a(23) =2607372a(24) =3071712a(25) =3595500a(26) =4183608a(27) =4841100a(28) =5573232a(29) =6385452