86173domain: NAppears in sequencesNumber of nondecreasing arrangements of 8 numbers x(i) in -(n+6)..(n+6) with the sum of sign(x(i))*x(i)^2 zero.at n=9A188008Regular triangle read by rows where T(n,k) is the number of labeled simple graphs on n vertices where all non-isolated vertices have degree k.at n=38A319729