2751463424domain: NAppears in sequencesa(n) = (3*n-2)*2^(n-3).at n=26A066373Smallest number beginning with the digits of n that has exactly n prime factors (counted with multiplicity).at n=26A109686a(0)=7, a(n) = 2*a(n-1) + 2^(n-1) for n > 0.at n=27A159695