2111100domain: NAppears in sequencesTernary numbers consisting of a run of 2's, then a run of 1's, then a run of 0's.at n=23A371053Ternary numbers that are concatenated runs C(1)A(1)B(1)C(2)A(2)B(2)...C(k)A(k)B(k), where A(i) is a run of 1's, B(i) a run of 0's, and C(i) a run of 2's, for i = 1..k.at n=29A371111