A248404 Noncongruent squarefree numbers n with A248395(n)/d(n) = -1, where d(n) = A000005(n).

26, 42, 66, 106, 186, 202, 266, 418, 498, 530, 554, 570, 634, 682, 690, 754, 762, 770, 834, 858, 874, 930, 1010, 1034, 1082, 1114, 1130, 1266, 1290, 1298, 1354, 1370, 1410, 1490, 1570, 1586, 1634, 1698, 1834, 1930, 1946, 1986, 1994, 2002, 2074, 2082, 2090, 2146

Offset: 1

Author

N. J. A. Sloane, Oct 20 2014

Keywords

• nonn

Links

• J. B. Tunnell, A classical Diophantine problem and modular forms of weight 3/2, Invent. Math., 72 (1983), 323-334.

Crossrefs

Cf. A000005, A003273, A248394, A248395, A248397-A248406.

Extensions

More terms from Amiram Eldar, Oct 13 2019