-13608domain: ZAppears in sequencesTriangle, read by rows, T(n,k) = (-1)^k*binomial(n, k)*3^(n-k).at n=39A164942Coefficients in q-expansion of E_2^3*E_4, where E_2 and E_4 are respectively the Eisenstein series A006352 and A004009.at n=2A282586