Conjectured numbers n for which n^n + (-1)^n (n-1)^(n-1) is not squarefree.

Terms

a(0) =130a(1) =257a(2) =487a(3) =528a(4) =815a(5) =897a(6) =1176a(7) =1225a(8) =1320a(9) =1373a(10) =1430a(11) =2029a(12) =2050a(13) =2084a(14) =2198a(15) =2247a(16) =2526a(17) =2608a(18) =2895a(19) =2936a(20) =2958a(21) =3166a(22) =3679a(23) =3849a(24) =3909a(25) =3950a(26) =4237a(27) =4319a(28) =4598a(29) =4647