132713domain: NAppears in sequencesNumber of arrays of -2..2 integers x(1..n) with every x(i) in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=8A193704T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=53A193710