A177989 Numbers n such that quartic equation y^2=x^4-n has no integer solution.

2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 50, 51, 52, 53, 54, 55, 57, 58, 59, 61, 62, 63, 64, 66, 67, 68, 69, 70, 73, 74, 75, 76, 78, 79

Offset

1,1

Comments

Complement to this sequence see A177989.

Numbers n such that the quartic curve y^2=x^4+n doesn't have integral points. see A177987.

Links

Table of n, a(n) for n=1..63.

Prog

(Magma) IntegralQuarticPoints([1, 0, 0, 0, -79]);

Crossrefs

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

Sequence in context: A068398 A293168 A133194 * A022774 A153134 A220506

Adjacent sequences: A177986 A177987 A177988 * A177990 A177991 A177992

Keyword

nonn

Author

Artur Jasinski, May 16 2010

Status

approved