Smallest triangular number containing exactly n 1's.

A036518

Smallest triangular number containing exactly n 1's.

Terms

    a(0) =1a(1) =171a(2) =1711a(3) =105111a(4) =1188111a(5) =18111171a(6) =1111160511a(7) =11161151121a(8) =111111101310

External references