a(n) is the number of digits in the decimal representation of the smallest power of 2 that contains n consecutive identical digits.
A217185
a(n) is the number of digits in the decimal representation of the smallest power of 2 that contains n consecutive identical digits.
Terms
- a(0) =1a(1) =5a(2) =8a(3) =13a(4) =67a(5) =293a(6) =293a(7) =2576a(8) =12790a(9) =12790a(10) =81874a(11) =312865a(12) =520061a(13) =2063822
External references
- oeis: A217185