Triangular numbers whose largest proper divisor is also triangular.

A076170

Triangular numbers whose largest proper divisor is also triangular.

Terms

    a(0) =1a(1) =3a(2) =6a(3) =45a(4) =210a(5) =7140a(6) =122265a(7) =242556a(8) =1702935a(9) =8239770a(10) =279909630a(11) =4601330415a(12) =9508687656a(13) =64088265153a(14) =323015470680

External references