Triangular numbers composed of digits {3,7,8}.
A119200
Triangular numbers composed of digits {3,7,8}.
Terms
- a(0) =3a(1) =78a(2) =378a(3) =8778a(4) =887778a(5) =88877778a(6) =8787733878a(7) =8888777778a(8) =73778888778a(9) =888887777778
External references
- oeis: A119200