Triangular numbers representable as t*p, where t>1 is a triangular number, p>1 is a prime power (A025475).

A221563

Triangular numbers representable as t*p, where t>1 is a triangular number, p>1 is a prime power (A025475).

Terms

    a(0) =120a(1) =528a(2) =1485a(3) =3240a(4) =58653a(5) =70125a(6) =139128a(7) =609960a(8) =886446a(9) =902496a(10) =1062153a(11) =1844160a(12) =4017195a(13) =8386560a(14) =8759205a(15) =38618866a(16) =39760903a(17) =122062500a(18) =160554240a(19) =703893960a(20) =741105750a(21) =797222415a(22) =6115239936a(23) =10854464130a(24) =23667373395a(25) =82103447700a(26) =131197213890

External references