100659200domain: NAppears in sequencesSum of 2^n, ..., 2^(n+1) - 1.at n=13A010036Duplicate of A136488.at n=26A135098a(n) = 2^n - A005418(n).at n=26A136488Smallest pentagonal number with n prime factors (counted with multiplicity).at n=15A209049