124940568222domain: NAppears in sequencesMaximal coefficient of polynomial p(n), with p(3)=1, p(n) = (1 - t^(2*n - 4))*(1 - t^(2*n - 3))*p(n - 1)/((1 - t^(n - 3))*(1 - t^n)).at n=22A046919Number of strictly increasing arrangements of n numbers in -(n+1)..(n+1) with sum zero.at n=21A188175