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.

Showing 1-2 of 2 results.

A077535 Multiples of 6 with only prime digits (2, 3, 5 and 7).

Original entry on oeis.org

72, 222, 252, 372, 522, 552, 732, 2232, 2322, 2352, 2532, 2772, 3222, 3252, 3372, 3522, 3552, 3732, 5232, 5322, 5352, 5532, 5772, 7272, 7332, 7572, 7722, 7752, 22272, 22332, 22572, 22722, 22752, 23232, 23322, 23352, 23532, 23772, 25272
Offset: 1

Views

Author

Amarnath Murthy, Nov 08 2002

Keywords

Comments

There are 4^n/12 + O(1) n-digit terms in this sequence. - Charles R Greathouse IV, Jul 15 2016

Crossrefs

Extensions

Corrected and extended by Sascha Kurz, Jan 03 2003
Corrected and extended by Don Reble, Nov 20 2006

A077536 Multiples of 7 using only prime digits (2, 3, 5 and 7).

Original entry on oeis.org

7, 35, 77, 252, 273, 322, 357, 525, 532, 553, 735, 777, 2233, 2275, 2352, 2373, 2527, 2555, 2723, 2737, 2772, 3227, 3255, 3325, 3332, 3353, 3535, 3577, 3752, 3773, 5222, 5257, 5327, 5355, 5523, 5537, 5572, 5733, 5775, 7252, 7273, 7322, 7357, 7525, 7532
Offset: 0

Views

Author

Amarnath Murthy, Nov 08 2002

Keywords

Crossrefs

Programs

  • Mathematica
    Select[7*Range[1100],And@@PrimeQ[IntegerDigits[#]]&] (* Harvey P. Dale, Jul 18 2011 *)

Extensions

Corrected and extended by Sascha Kurz, Jan 03 2003
Showing 1-2 of 2 results.