Triangular numbers with more than three distinct prime factors.

Terms

a(0) =210a(1) =630a(2) =780a(3) =990a(4) =1326a(5) =1540a(6) =1596a(7) =1770a(8) =1830a(9) =2145a(10) =2346a(11) =2415a(12) =2850a(13) =2926a(14) =3003a(15) =3486a(16) =3570a(17) =3828a(18) =4095a(19) =4186a(20) =4278a(21) =4560a(22) =4950a(23) =5460a(24) =5565a(25) =6105a(26) =6216a(27) =6555a(28) =6670a(29) =6786