Number of ordered quintuples of distinct pairwise coprime positive integers with largest element n.

Terms

a(0) =2a(1) =1a(2) =3a(3) =0a(4) =26a(5) =1a(6) =72a(7) =9a(8) =14a(9) =29a(10) =228a(11) =15a(12) =431a(13) =55a(14) =115a(15) =75a(16) =928a(17) =70a(18) =743a(19) =205a(20) =633a(21) =225a(22) =2499a(23) =70a(24) =3571a(25) =958a(26) =1085a(27) =728a(28) =1626a(29) =350