a(1) = 8; a(n+1) = smallest triangular number > a(n) formed by adding at least one digit to a(n).
A068623
a(1) = 8; a(n+1) = smallest triangular number > a(n) formed by adding at least one digit to a(n).
Terms
- a(0) =8a(1) =28a(2) =528a(3) =18528a(4) =184528a(5) =18045028a(6) =1800450028a(7) =180004500028
External references
- oeis: A068623