41889domain: NAppears in sequencesTriangle read by rows, T(n, k) the coefficients of some polynomials in Pi, for n >= 0 and 0 <= k <= n.at n=32A295516a(n) = Sum_{j=1..n*(n-1)} (n*j mod (n+j)).at n=18A309341Constant term in the expansion of (1 + w + x + y + z + 1/w + 1/x + 1/y + 1/z)^n.at n=7A328714