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.

A055683 Number of Gaussian primes (in the first half-quadrant; i.e., 0 to 45 degrees) with real part < 10^n.

Original entry on oeis.org

15, 756, 48979, 3612920, 286272005
Offset: 1

Views

Author

Robert G. Wilson v, Jun 09 2000

Keywords

References

  • Mark A. Herkommer, "Number Theory, A Programmer's Guide," McGraw-Hill, New York, 1999, page 269.

Programs

  • Mathematica
    c=0; Do[ If[ PrimeQ[ j + k*I, GaussianIntegers -> True], c++ ], {j, 0, 10^n-1}, {k, 0, j} ]; c

Extensions

Name corrected by Sean A. Irvine, Apr 02 2022