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.

User: Harvey Dale

Harvey Dale's wiki page.

Harvey Dale has authored 2 sequences.

A094317 Primes n with property that sum of digits that are primes is prime.

Original entry on oeis.org

2, 3, 5, 7, 13, 17, 23, 29, 31, 43, 47, 59, 67, 71, 79, 83, 97, 103, 107, 113, 131, 139, 151, 163, 167, 179, 193, 197, 211, 223, 227, 239, 241, 251, 263, 269, 281, 283, 293, 311, 337, 349, 353, 373, 389, 421, 431, 439, 443, 463, 467, 479, 487, 509
Offset: 1

Views

Author

Harvey Dale, May 31 2004

Keywords

Crossrefs

Cf. A094318.

A094318 Primes n with property that sum of digits that are 1 or a prime is prime.

Original entry on oeis.org

2, 3, 5, 7, 11, 23, 29, 43, 47, 59, 67, 79, 83, 97, 101, 113, 131, 137, 151, 157, 173, 181, 191, 223, 227, 239, 241, 263, 269, 281, 283, 293, 311, 313, 317, 331, 337, 349, 353, 373, 389, 421, 439, 443, 463, 467, 479, 487, 509, 557, 569, 571, 577
Offset: 1

Views

Author

Harvey Dale, May 31 2004

Keywords

Crossrefs

Cf. A094317.

Programs

  • Mathematica
    sdprQ[n_]:=PrimeQ[Total[Select[IntegerDigits[n],MemberQ[{1,2,3,5,7},#]&]]]; Select[Prime[Range[200]],sdprQ] (* Harvey P. Dale, May 19 2014 *)

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.