11703125domain: NAppears in sequencesa(n) = 5^(floor(n/2))+5^(floor(n/2)-1)-5^(floor((n-1)/3)).at n=18A170834a(n) = 5^(floor(n/2))+5^(floor(n/2)-1)-5^(floor((n-1)/3)).at n=19A170834