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.

A259532 Triangular array: row k shows the discriminant of sqrt(j) + sqrt(k) for j=1..k.

Original entry on oeis.org

1, 8, 8, 12, 8, 12, 1, 2304, 2304, 1, 5, 8, 12, 8, 5, 24, 1600, 12, 12, 1600, 24, 28, 2304, 3600, 1, 3600, 2304, 28, 8, 12544, 2304, 5, 5, 2304, 12544, 8, 1, 8, 7056, 24, 5, 24, 7056, 8, 1, 40, 8, 2304, 28, 14400, 14400, 28, 2304, 8, 40, 44, 1600, 12, 8
Offset: 1

Views

Author

Clark Kimberling, Jul 20 2015

Keywords

Examples

			First seven rows:
1
8   8
12  8     12
1   2304  2304   1
5   8     12     8   5
24  1600  12     12  1600  24
28  2304  3600   1   3600  2304  28
		

Crossrefs

Programs

  • Mathematica
    t = Table[NumberFieldDiscriminant[Sqrt[j] + Sqrt[k + 1 - j]], {k, 1, 16}, {j, 1, k}]
    TableForm[t] (* A259532 array *)
    Flatten[t]   (* A259532 sequence *)