A248397 Noncongruent squarefree numbers n with A248394(n)/d(n) = 1, where d(n) = A000005(n).

1, 3, 33, 51, 57, 59, 83, 139, 177, 187, 209, 211, 267, 321, 339, 345, 379, 385, 411, 451, 489, 499, 515, 555, 587, 595, 649, 659, 665, 681, 707, 803, 811, 827, 835, 899, 921, 969, 1001, 1059, 1099, 1137, 1171, 1211, 1219, 1235, 1259, 1267, 1281, 1315, 1329, 1363

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, A165564, A248394, A248395, A248397-A248407.

Extensions

More terms from Amiram Eldar, Oct 13 2019