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.

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A380302 Area of the unique primitive Pythagorean triple whose inradius is the n-th odd prime and whose short leg is an even number.

Original entry on oeis.org

60, 210, 504, 1716, 2730, 5814, 7980, 13800, 26970, 32736, 54834, 74046, 85140, 110544, 157410, 215940, 238266, 314364, 373176, 405150, 511920, 592620, 728910, 941094, 1061106, 1124760, 1259604, 1330890, 1481430, 2097024, 2299836, 2627934, 2743860, 3374850, 3511656, 3944154
Offset: 0

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Author

Keywords

References

  • Miguel Ángel Pérez García-Ortega, José Manuel Sánchez Muñoz and José Miguel Blanco Casado, El Libro de las Ternas Pitagóricas, Preprint 2025.

Crossrefs

Programs

  • Mathematica
    a = Table[Prime[n], {n, 2, 42}]; Apply[Join, Map[{# (# + 1) (# + 2)} &, a]]

Formula

a(n) = ( A367335(n,1) * A367335(n,2) )/2.
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