The sum of all the entries in an n X n Cayley table for multiplication in Z_n.

Terms

a(0) =0a(1) =1a(2) =6a(3) =16a(4) =40a(5) =63a(6) =126a(7) =176a(8) =270a(9) =365a(10) =550a(11) =624a(12) =936a(13) =1099a(14) =1350a(15) =1664a(16) =2176a(17) =2349a(18) =3078a(19) =3280a(20) =3948a(21) =4631a(22) =5566a(23) =5712a(24) =7000a(25) =7813a(26) =8748a(27) =9520a(28) =11368a(29) =11475