m_8 = 576 + int_0^1 (1-d)(32-8d)^2 dd + 256/24 = 3056/3   k_8 = 256/24 + int_0^1 (1-d)(16-8d)^2 dd = 304/3
k_6 = 16*(4/6 + 1) = 80/3   m_6 = 144 + 64/6 = 464/3
one face: sqrt(2-2t_1) + int_0^{t_1} (2-2tau)^(-1/2) dtau = sqrt(2)   ; n=0: int_0^1 (2-2tau)^(-1/2) dtau = sqrt(2)
4 Q(1/2) = 1.89799   eta = [0.632366]   kappa >= 2/eta = [3.16272]
with k_2..k_44 (my direct cumulants) and c = 2.585826606048204: K(c) partial sum = 2.585725319 (c - K = 1.013e-04),  1/(1+sum (n-1) k_n c^-n) = 0.251452664
