67487domain: NAppears in sequencesa(n) = 529*n^2 - 746*n + 263.at n=11A156842Number of nondecreasing arrangements of n numbers x(i) in -n..n with the sum of sign(x(i))*x(i)^2 zero.at n=9A187995T(n,k)=Number of nondecreasing arrangements of n numbers x(i) in -(n+k-2)..(n+k-2) with the sum of sign(x(i))*x(i)^2 zero.at n=64A188002