103717domain: NAppears in sequencesM-sequences m_0,m_1,m_2,m_3 with m_1 < n.at n=15A011819Number of (n+1) X 4 binary arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=17A184065