16810000domain: NAppears in sequencesSmallest number that has exactly n substrings which are square.at n=15A035237Number of additive cyclic codes over GF(4) of length n that can be generated by one codeword.at n=22A143696Squares whose arithmetic mean of digits is 2 (i.e., the sum of digits is twice the number of digits).at n=23A316482