A088535 n representable as x^2+xy+y^2 and such that 3 divides sigma(n).

49, 147, 169, 196, 361, 441, 507, 588, 637, 676, 784, 931, 961, 1083, 1183, 1225, 1323, 1369, 1444, 1519, 1521, 1764, 1813, 1849, 1911, 2028, 2107, 2352, 2527, 2548, 2704, 2793, 2883, 2989, 3136, 3211, 3249, 3283, 3549, 3577, 3675, 3721, 3724, 3844, 3871

Offset: 1

Author

Benoit Cloitre, Nov 16 2003

Keywords

• nonn

Formula

n in A003136 and in A087943

Extensions

More terms from David Wasserman, Aug 09 2005