110110110110domain: NAppears in sequencesDecimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,1,0.at n=11A033137a(0)=0, a(1)=1, a(2)=10; for n>2, a(n) = concat(a(1), ..., a(n-1)).at n=5A266926