Star numbers (A003154) that are also triangular numbers (A000217).

A156712

Star numbers (A003154) that are also triangular numbers (A000217).

Terms

    a(0) =1a(1) =7a(2) =91a(3) =1261a(4) =17557a(5) =244531a(6) =3405871a(7) =47437657a(8) =660721321a(9) =9202660831a(10) =128176530307

External references