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.

A083974 Smallest palindromic prime containing exactly n 3's.

Original entry on oeis.org

3, 313, 13331, 33533, 1333331, 3331333, 323333323, 13333633331, 31333333313, 1333335333331, 3233333333323, 133333353333331, 332333333333233, 333333313333333, 33233333333333233, 1333333336333333331, 3333333313133333333, 133333333383333333331
Offset: 1

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Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 21 2003

Keywords

Crossrefs

Programs

  • Mathematica
    Table[d = 3; i = 1;
     While[ x = IntegerDigits[Prime[i]];
      x != Reverse[x] || Count[x, d] != n , i++];
    FromDigits[x], {n, 1, 6}]  (* Robert Price, Mar 25 2019 *)

Extensions

More terms from Giovanni Resta, Feb 08 2006