104176domain: NAppears in sequencesSum_{k=1..n} (k(k+1))^2/2.at n=14A086755Number of 4Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=7A207962E.g.f. satisfies A(x) = (exp(x/(1 - A(x))) - 1)/(1 - A(x))^2.at n=5A371330