799893domain: NAppears in sequencesNumber of nXnXn triangular 0..1 arrays with each element equal to at least two neighbors, containing at least one 1 and with new values 0..1 introduced in row major order.at n=7A192887Upper (1/3,1/2)-midsequence of ((2^n)) and ((3^n)); see Comments.at n=13A389124