A177988 Numbers n such that quartic curve y^2=x^4-n has integral points.

1, 7, 12, 15, 16, 17, 31, 32, 45, 49, 56, 60, 65, 71, 72, 77, 80, 81

Offset

1,2

Comments

Complement to this sequence see A177989.

Numbers n such that quartic curve y^2=x^4+n has integral points. see A177986.

Links

Table of n, a(n) for n=1..18.

Prog

(Magma) IntegralQuarticPoints([1, 0, 0, 0, -81]);

Crossrefs

Cf. A054504, A081121, A177986, A177987, A177988, A177989.

Sequence in context: A162194 A247954 A145310 * A072834 A138615 A210254

Adjacent sequences: A177985 A177986 A177987 * A177989 A177990 A177991

Keyword

nonn

Author

Artur Jasinski, May 16 2010

Status

approved