100000002048domain: NAppears in sequencesSmallest n-digit number divisible by 2^n.at n=11A050621a(n) = Sum {0<d|n, n/d odd} d^11.at n=9A096963a(n) = Sum_{d|n, n/d==1 mod 4} d^11 - Sum_{d|n, n/d==3 mod 4} d^11.at n=9A321835