Sigma_2_3_7:  (16,117,202,101)
Sigma_2_5_7:  (18,138,240,120)
Sigma_3_4_5:  (18,139,242,121)
Sigma_3_4_7:  (18,151,266,133)
Sigma_3_5_7:  (20,171,302,151)
Sigma_4_5_7:  (20,177,314,157)