Number of ordered 5-tuples of integers from [ 2,n ] with no global factor.

Terms

a(0) =0a(1) =4a(2) =14a(3) =48a(4) =99a(5) =224a(6) =399a(7) =714a(8) =1135a(9) =1849a(10) =2694a(11) =4058a(12) =5664a(13) =7960a(14) =10690a(15) =14565a(16) =18804a(17) =24788a(18) =31358a(19) =39989a(20) =49610a(21) =62259a(22) =75549a(23) =93029a(24) =111680a(25) =134936a(26) =159931a(27) =191395a(28) =223543a(29) =264462