Triangular numbers such that the product of digits is also a (positive) triangular number.

Terms

a(0) =1a(1) =3a(2) =6a(3) =66a(4) =153a(5) =231a(6) =351a(7) =465a(8) =741a(9) =1326a(10) =2556a(11) =5671a(12) =6786a(13) =14535a(14) =21115a(15) =24531a(16) =25651a(17) =33411a(18) =43956a(19) =57291a(20) =58311a(21) =71253a(22) =92665a(23) =95266a(24) =123753a(25) =153181a(26) =167331a(27) =278631a(28) =325221a(29) =341551