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.

A104048 Numbers k such that k11 is prime and k is a multiple of ten.

Original entry on oeis.org

0, 20, 30, 50, 60, 80, 90, 120, 140, 170, 200, 210, 230, 270, 300, 360, 380, 410, 540, 590, 620, 650, 690, 710, 750, 840, 860, 870, 900, 980, 1080, 1130, 1200, 1220, 1260, 1290, 1310, 1460, 1470, 1490, 1500, 1560, 1620, 1640, 1770, 1820, 1880, 1890, 2010, 2030, 2100, 2220, 2240, 2270
Offset: 1

Views

Author

Parthasarathy Nambi, Mar 01 2005

Keywords

Examples

			20 is a term because it is a multiple of 10 and 2011 is a prime.
170 is a term because it is a multiple of 10 and 17011 is a prime.
360 is a term because it is a multiple of 10 and 36011 is a prime.
		

Crossrefs

Cf. A101471.

Programs

  • Mathematica
    Select[Range[0,2270,10],PrimeQ[FromDigits[Prepend[{1,1},#]]]&] (* James C. McMahon, Jan 20 2024 *)