Triangular numbers composed of digits {5,6,8}.
A119220
Triangular numbers composed of digits {5,6,8}.
Terms
- a(0) =6a(1) =55a(2) =66a(3) =666a(4) =5565a(5) =5886a(6) =6555a(7) =866586a(8) =5656566a(9) =5566865886a(10) =58855888686a(11) =866856686865
External references
- oeis: A119220