Triangular numbers composed of digits {6,7,8}.
A119230
Triangular numbers composed of digits {6,7,8}.
Terms
- a(0) =6a(1) =66a(2) =78a(3) =666a(4) =6786a(5) =8778a(6) =676866a(7) =887778a(8) =88877778a(9) =8888777778a(10) =888887777778
External references
- oeis: A119230