cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A220862 a(n) = smallest m>0 such that the n-th rational prime p splits in the imaginary quadratic extension field K = Q(sqrt(-m)).

Original entry on oeis.org

-7, -2, -1, -3, -2, -1, -1, -2, -5, -1, -3, -1, -1, -2, -5, -1, -2, -1, -2, -7, -1, -3, -2, -1, -1, -1, -3, -2, -1, -1, -3, -2, -1, -2, -1, -3, -1, -2, -5, -1, -2, -1, -7, -1, -1, -3, -2, -3, -2, -1, -1, -7, -1, -2, -1, -5, -1, -3, -1, -1, -2, -1, -2, -11, -1, -1, -2, -1, -2, -1, -1, -7, -3, -1, -2, -5, -1, -1, -1, -1, -2, -1, -7, -1, -3, -2, -1, -1, -1, -3, -2, -13, -3, -2, -2, -5, -1, -1, -2, -1
Offset: 1

Views

Author

N. J. A. Sloane, Dec 26 2012

Keywords

Comments

Except for the first term, a(n) = -A088192(n).

References

  • David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989, Cor. 5.17, p. 105.

Crossrefs