A177988 -id:A177988 - cp's OEIS frontend

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

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Artur Jasinski, May 16 2010

nonn

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.

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

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

cp's OEIS Frontend

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

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