First elements of maximal isospectral chains of length 3.

Terms

a(0) =10980a(1) =35280a(2) =36180a(3) =43380a(4) =46980a(5) =47268a(6) =52164a(7) =59508a(8) =71604a(9) =73476a(10) =75780a(11) =87444a(12) =92880a(13) =94500a(14) =100980a(15) =101700a(16) =108180a(17) =122580a(18) =132480a(19) =139284a(20) =150948a(21) =151956a(22) =172980a(23) =176580a(24) =179172a(25) =198576a(26) =201168a(27) =202464a(28) =215424a(29) =235188