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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A030521 Product of first n palindromic primes plus 1.

Original entry on oeis.org

3, 7, 31, 211, 2311, 233311, 30563611, 4615105111, 835334024911, 159548798757811, 49938774011194531, 17628387225951669091, 6575388435279972570571, 2518373770712229494528311, 1830857731307790842522081371, 1385959302599997667789215597091
Offset: 1

Views

Author

Felice Russo

Keywords

Comments

The subsequence of those values which are themselves primes begins: 3, 7, 31, 211, 2311, 6575388435279972570571. - Jonathan Vos Post, Feb 09 2011

Crossrefs

Cf. A019515, A030522.

Programs

  • Mathematica
    palpQ[n_]:=Module[{idn=IntegerDigits[n]},idn==Reverse[idn]]; #+1&/@FoldList[ Times, 1,Select[Prime[Range[500]],palpQ]]  (* Harvey P. Dale, Apr 23 2011 *)

Extensions

Corrected and extended by Patrick De Geest, Sep 15 2000
More terms from Harvey P. Dale, Apr 23 2011
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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