A248405 Noncongruent squarefree numbers n with A248395(n)/d(n) = 2, where d(n) = A000005(n).

82, 282, 562, 626, 818, 914, 1042, 1106, 1138, 1202, 1426, 1442, 1578, 1618, 1778, 1802, 1874, 2114, 2258, 2338, 2410, 2482, 2506, 2562, 2642, 2674, 2714, 2866, 2874, 2938, 2954, 3322, 3498, 3506, 3602, 3810, 4314, 4354, 4458, 4562, 4826, 4930, 5026, 5258, 5322

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