156546domain: NAppears in sequencesNumber of length n+4 0..2 arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms.at n=10A254692Expansion of (1/(1 - x)) * Sum_{k>=0} x^(2*k) / Product_{j=1..2*k} (1 - x^j).at n=42A304620