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

1,1

Links

Table of n, a(n) for n=1..45.

Formula

n in A003136 and in A087943

Crossrefs

Sequence in context: A316121 A087354 A098442 * A045897 A162942 A027469

Adjacent sequences: A088532 A088533 A088534 * A088536 A088537 A088538

Keyword

nonn

Author

Benoit Cloitre, Nov 16 2003

Extensions

More terms from David Wasserman, Aug 09 2005

Status

approved