Main diagonal of A332372.

Terms

a(0) =9a(1) =43a(2) =139a(3) =327a(4) =703a(5) =1259a(6) =2183a(7) =3487a(8) =5355a(9) =7723a(10) =11031a(11) =15111a(12) =20535a(13) =26995a(14) =34875a(15) =44195a(16) =55819a(17) =69063a(18) =85203a(19) =103587a(20) =124859a(21) =148599a(22) =176579a(23) =207627a(24) =243323a(25) =282539a(26) =326759a(27) =375287a(28) =430615a(29) =490303