Triangular numbers that are products of three distinct primes.

Terms

a(0) =66a(1) =78a(2) =105a(3) =190a(4) =231a(5) =406a(6) =435a(7) =465a(8) =561a(9) =595a(10) =741a(11) =861a(12) =903a(13) =946a(14) =1378a(15) =1653a(16) =2211a(17) =2278a(18) =2485a(19) =3081a(20) =3655a(21) =3741a(22) =4371a(23) =4465a(24) =5151a(25) =5253a(26) =5995a(27) =6441a(28) =7021a(29) =7503