Number of 5-tuples of different integers from [ 2,n ] with no common factors among pairs.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =6a(10) =6a(11) =33a(12) =35a(13) =38a(14) =48a(15) =157a(16) =162a(17) =400a(18) =425a(19) =478a(20) =511a(21) =1076a(22) =1111a(23) =1562a(24) =1673a(25) =2058a(26) =2183a(27) =3880a(28) =3915a(29) =6449