Least number k such that 2^k begins with exactly n identical digits.

A235713

Least number k such that 2^k begins with exactly n identical digits.

Terms

    a(0) =1a(1) =25a(2) =143a(3) =1598a(4) =10627a(5) =194220a(6) =26399a(7) =37811757a(8) =15689797a(9) =1609719151a(10) =42001126081a(11) =42116737194

External references