55943domain: NAppears in sequencesNumber of compositions of n into Fibonacci numbers (1 counted as single Fibonacci number).at n=18A076739Least integer k > 0 such that A000041(k) is divisible by 2^n.at n=18A145523a(n) is the smallest k such that the 2-adic valuation of A000041(k) equals n.at n=18A278479