Number of subgroups of the group C_n x C_n x C_n x C_n, where C_n is the cyclic group of order n.

Terms

a(0) =1a(1) =67a(2) =212a(3) =1983a(4) =1120a(5) =14204a(6) =3652a(7) =43339a(8) =24033a(9) =75040a(10) =19156a(11) =420396a(12) =35872a(13) =244684a(14) =237440a(15) =821335a(16) =99472a(17) =1610211a(18) =152404a(19) =2220960a(20) =774224a(21) =1283452a(22) =318532a(23) =9187868a(24) =810969a(25) =2403424a(26) =2222704a(27) =7241916a(28) =783904a(29) =15908480