Triangular numbers composed of digits {4,7,8}.
A119216
Triangular numbers composed of digits {4,7,8}.
Terms
- a(0) =78a(1) =8778a(2) =448878a(3) =887778a(4) =7478778a(5) =88877778a(6) =8888777778a(7) =44847878778a(8) =747488474778a(9) =888887777778
External references
- oeis: A119216